Calculus Examples

$lim_{x \to 1} \frac{1 - x^{- \frac{1}{3}}}{1 - x^{- \frac{2}{3}}}$

Step 1

Simplify terms.

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Step 1.1

Simplify the limit argument.

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Step 1.1.1

Convert negative exponents to fractions.

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Step 1.1.1.1

Rewrite the expression using the negative exponent rule $b^{- n} = \frac{1}{b^{n}}$ .

$lim_{x \to 1} \frac{1 - \frac{1}{x^{\frac{1}{3}}}}{1 - x^{- \frac{2}{3}}}$

Step 1.1.1.2

Rewrite the expression using the negative exponent rule $b^{- n} = \frac{1}{b^{n}}$ .

$lim_{x \to 1} \frac{1 - \frac{1}{x^{\frac{1}{3}}}}{1 - \frac{1}{x^{\frac{2}{3}}}}$

Step 1.1.2

Rewrite $x^{\frac{1}{3}}$ as $\sqrt[3]{x}$ .

$lim_{x \to 1} \frac{1 - \frac{1}{\sqrt[3]{x}}}{1 - \frac{1}{x^{\frac{2}{3}}}}$

Step 1.1.3

Combine terms.

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Step 1.1.3.1

Write $1$ as a fraction with a common denominator.

$lim_{x \to 1} \frac{\frac{\sqrt[3]{x}}{\sqrt[3]{x}} - \frac{1}{\sqrt[3]{x}}}{1 - \frac{1}{x^{\frac{2}{3}}}}$

Step 1.1.3.2

Combine the numerators over the common denominator.

$lim_{x \to 1} \frac{\frac{\sqrt[3]{x} - 1}{\sqrt[3]{x}}}{1 - \frac{1}{x^{\frac{2}{3}}}}$

Step 1.1.3.3

Write $1$ as a fraction with a common denominator.

$lim_{x \to 1} \frac{\frac{\sqrt[3]{x} - 1}{\sqrt[3]{x}}}{\frac{x^{\frac{2}{3}}}{x^{\frac{2}{3}}} - \frac{1}{x^{\frac{2}{3}}}}$

Step 1.1.3.4

Combine the numerators over the common denominator.

$lim_{x \to 1} \frac{\frac{\sqrt[3]{x} - 1}{\sqrt[3]{x}}}{\frac{x^{\frac{2}{3}} - 1}{x^{\frac{2}{3}}}}$

Step 1.2

Simplify the limit argument.

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Step 1.2.1

Multiply the numerator by the reciprocal of the denominator.

$lim_{x \to 1} \frac{\sqrt[3]{x} - 1}{\sqrt[3]{x}} \cdot \frac{x^{\frac{2}{3}}}{x^{\frac{2}{3}} - 1}$

Step 1.2.2

Multiply $\frac{\sqrt[3]{x} - 1}{\sqrt[3]{x}}$ by $\frac{x^{\frac{2}{3}}}{x^{\frac{2}{3}} - 1}$ .

$lim_{x \to 1} \frac{(\sqrt[3]{x} - 1) x^{\frac{2}{3}}}{\sqrt[3]{x} (x^{\frac{2}{3}} - 1)}$

Step 2

Apply L'Hospital's rule.

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Step 2.1

Evaluate the limit of the numerator and the limit of the denominator.

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Step 2.1.1

Take the limit of the numerator and the limit of the denominator.

$\frac{lim_{x \to 1} (\sqrt[3]{x} - 1) x^{\frac{2}{3}}}{lim_{x \to 1} \sqrt[3]{x} (x^{\frac{2}{3}} - 1)}$

Step 2.1.2

Evaluate the limit of the numerator.

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Step 2.1.2.1

Split the limit using the Product of Limits Rule on the limit as $x$ approaches $1$ .

$\frac{lim_{x \to 1} \sqrt[3]{x} - 1 \cdot lim_{x \to 1} x^{\frac{2}{3}}}{lim_{x \to 1} \sqrt[3]{x} (x^{\frac{2}{3}} - 1)}$

Step 2.1.2.2

Split the limit using the Sum of Limits Rule on the limit as $x$ approaches $1$ .

$\frac{(lim_{x \to 1} \sqrt[3]{x} - lim_{x \to 1} 1) \cdot lim_{x \to 1} x^{\frac{2}{3}}}{lim_{x \to 1} \sqrt[3]{x} (x^{\frac{2}{3}} - 1)}$

Step 2.1.2.3

Move the limit under the radical sign.

$\frac{(\sqrt[3]{lim_{x \to 1} x} - lim_{x \to 1} 1) \cdot lim_{x \to 1} x^{\frac{2}{3}}}{lim_{x \to 1} \sqrt[3]{x} (x^{\frac{2}{3}} - 1)}$

Step 2.1.2.4

Evaluate the limit of $1$ which is constant as $x$ approaches $1$ .

$\frac{(\sqrt[3]{lim_{x \to 1} x} - 1 \cdot 1) \cdot lim_{x \to 1} x^{\frac{2}{3}}}{lim_{x \to 1} \sqrt[3]{x} (x^{\frac{2}{3}} - 1)}$

Step 2.1.2.5

Move the exponent $\frac{2}{3}$ from $x^{\frac{2}{3}}$ outside the limit using the Limits Power Rule.

$\frac{(\sqrt[3]{lim_{x \to 1} x} - 1 \cdot 1) \cdot {(lim_{x \to 1} x)}^{\frac{2}{3}}}{lim_{x \to 1} \sqrt[3]{x} (x^{\frac{2}{3}} - 1)}$

Step 2.1.2.6

Evaluate the limits by plugging in $1$ for all occurrences of $x$ .

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Step 2.1.2.6.1

Evaluate the limit of $x$ by plugging in $1$ for $x$ .

$\frac{(\sqrt[3]{1} - 1 \cdot 1) \cdot {(lim_{x \to 1} x)}^{\frac{2}{3}}}{lim_{x \to 1} \sqrt[3]{x} (x^{\frac{2}{3}} - 1)}$

Step 2.1.2.6.2

Evaluate the limit of $x$ by plugging in $1$ for $x$ .

$\frac{(\sqrt[3]{1} - 1 \cdot 1) \cdot 1^{\frac{2}{3}}}{lim_{x \to 1} \sqrt[3]{x} (x^{\frac{2}{3}} - 1)}$

Step 2.1.2.7

Simplify the answer.

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Step 2.1.2.7.1

Simplify each term.

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Step 2.1.2.7.1.1

Any root of $1$ is $1$ .

$\frac{(1 - 1 \cdot 1) \cdot 1^{\frac{2}{3}}}{lim_{x \to 1} \sqrt[3]{x} (x^{\frac{2}{3}} - 1)}$

Step 2.1.2.7.1.2

Multiply $- 1$ by $1$ .

$\frac{(1 - 1) \cdot 1^{\frac{2}{3}}}{lim_{x \to 1} \sqrt[3]{x} (x^{\frac{2}{3}} - 1)}$

Step 2.1.2.7.2

Subtract $1$ from $1$ .

$\frac{0 \cdot 1^{\frac{2}{3}}}{lim_{x \to 1} \sqrt[3]{x} (x^{\frac{2}{3}} - 1)}$

Step 2.1.2.7.3

One to any power is one.

$\frac{0 \cdot 1}{lim_{x \to 1} \sqrt[3]{x} (x^{\frac{2}{3}} - 1)}$

Step 2.1.2.7.4

Multiply $0$ by $1$ .

$\frac{0}{lim_{x \to 1} \sqrt[3]{x} (x^{\frac{2}{3}} - 1)}$

Step 2.1.3

Evaluate the limit of the denominator.

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Step 2.1.3.1

Split the limit using the Product of Limits Rule on the limit as $x$ approaches $1$ .

$\frac{0}{lim_{x \to 1} \sqrt[3]{x} \cdot lim_{x \to 1} x^{\frac{2}{3}} - 1}$

Step 2.1.3.2

Move the limit under the radical sign.

$\frac{0}{\sqrt[3]{lim_{x \to 1} x} \cdot lim_{x \to 1} x^{\frac{2}{3}} - 1}$

Step 2.1.3.3

Split the limit using the Sum of Limits Rule on the limit as $x$ approaches $1$ .

$\frac{0}{\sqrt[3]{lim_{x \to 1} x} \cdot (lim_{x \to 1} x^{\frac{2}{3}} - lim_{x \to 1} 1)}$

Step 2.1.3.4

Move the exponent $\frac{2}{3}$ from $x^{\frac{2}{3}}$ outside the limit using the Limits Power Rule.

$\frac{0}{\sqrt[3]{lim_{x \to 1} x} \cdot ({(lim_{x \to 1} x)}^{\frac{2}{3}} - lim_{x \to 1} 1)}$

Step 2.1.3.5

Evaluate the limit of $1$ which is constant as $x$ approaches $1$ .

$\frac{0}{\sqrt[3]{lim_{x \to 1} x} \cdot ({(lim_{x \to 1} x)}^{\frac{2}{3}} - 1 \cdot 1)}$

Step 2.1.3.6

Evaluate the limits by plugging in $1$ for all occurrences of $x$ .

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Step 2.1.3.6.1

Evaluate the limit of $x$ by plugging in $1$ for $x$ .

$\frac{0}{\sqrt[3]{1} \cdot ({(lim_{x \to 1} x)}^{\frac{2}{3}} - 1 \cdot 1)}$

Step 2.1.3.6.2

Evaluate the limit of $x$ by plugging in $1$ for $x$ .

$\frac{0}{\sqrt[3]{1} \cdot (1^{\frac{2}{3}} - 1 \cdot 1)}$

Step 2.1.3.7

Simplify the answer.

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Step 2.1.3.7.1

Any root of $1$ is $1$ .

$\frac{0}{1 \cdot (1^{\frac{2}{3}} - 1 \cdot 1)}$

Step 2.1.3.7.2

Multiply $1^{\frac{2}{3}} - 1 \cdot 1$ by $1$ .

$\frac{0}{1^{\frac{2}{3}} - 1 \cdot 1}$

Step 2.1.3.7.3

Simplify each term.

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Step 2.1.3.7.3.1

One to any power is one.

$\frac{0}{1 - 1 \cdot 1}$

Step 2.1.3.7.3.2

Multiply $- 1$ by $1$ .

$\frac{0}{1 - 1}$

Step 2.1.3.7.4

Subtract $1$ from $1$ .

$\frac{0}{0}$

Step 2.1.3.7.5

The expression contains a division by $0$ . The expression is undefined.

Undefined

$\frac{0}{0}$

Step 2.1.3.8

The expression contains a division by $0$ . The expression is undefined.

Undefined

$\frac{0}{0}$

Step 2.1.4

The expression contains a division by $0$ . The expression is undefined.

Undefined

$\frac{0}{0}$

Step 2.2

Since $\frac{0}{0}$ is of indeterminate form, apply L'Hospital's Rule. L'Hospital's Rule states that the limit of a quotient of functions is equal to the limit of the quotient of their derivatives.

$lim_{x \to 1} \frac{(\sqrt[3]{x} - 1) x^{\frac{2}{3}}}{\sqrt[3]{x} (x^{\frac{2}{3}} - 1)} = lim_{x \to 1} \frac{\frac{d}{d x} [(\sqrt[3]{x} - 1) x^{\frac{2}{3}}]}{\frac{d}{d x} [\sqrt[3]{x} (x^{\frac{2}{3}} - 1)]}$

Step 2.3

Find the derivative of the numerator and denominator.

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Step 2.3.1

Differentiate the numerator and denominator.

$lim_{x \to 1} \frac{\frac{d}{d x} [(\sqrt[3]{x} - 1) x^{\frac{2}{3}}]}{\frac{d}{d x} [\sqrt[3]{x} (x^{\frac{2}{3}} - 1)]}$

Step 2.3.2

Use $\sqrt[n]{a^{x}} = a^{\frac{x}{n}}$ to rewrite $\sqrt[3]{x}$ as $x^{\frac{1}{3}}$ .

$lim_{x \to 1} \frac{\frac{d}{d x} [(x^{\frac{1}{3}} - 1) x^{\frac{2}{3}}]}{\frac{d}{d x} [\sqrt[3]{x} (x^{\frac{2}{3}} - 1)]}$

Step 2.3.3

Differentiate using the Product Rule which states that $\frac{d}{d x} [f (x) g (x)]$ is $f (x) \frac{d}{d x} [g (x)] + g (x) \frac{d}{d x} [f (x)]$ where $f (x) = x^{\frac{1}{3}} - 1$ and $g (x) = x^{\frac{2}{3}}$ .

$lim_{x \to 1} \frac{(x^{\frac{1}{3}} - 1) \frac{d}{d x} [x^{\frac{2}{3}}] + x^{\frac{2}{3}} \frac{d}{d x} [x^{\frac{1}{3}} - 1]}{\frac{d}{d x} [\sqrt[3]{x} (x^{\frac{2}{3}} - 1)]}$

Step 2.3.4

Differentiate using the Power Rule which states that $\frac{d}{d x} [x^{n}]$ is $n x^{n - 1}$ where $n = \frac{2}{3}$ .

$lim_{x \to 1} \frac{(x^{\frac{1}{3}} - 1) (\frac{2}{3} x^{\frac{2}{3} - 1}) + x^{\frac{2}{3}} \frac{d}{d x} [x^{\frac{1}{3}} - 1]}{\frac{d}{d x} [\sqrt[3]{x} (x^{\frac{2}{3}} - 1)]}$

Step 2.3.5

To write $- 1$ as a fraction with a common denominator, multiply by $\frac{3}{3}$ .

$lim_{x \to 1} \frac{(x^{\frac{1}{3}} - 1) (\frac{2}{3} x^{\frac{2}{3} - 1 \cdot \frac{3}{3}}) + x^{\frac{2}{3}} \frac{d}{d x} [x^{\frac{1}{3}} - 1]}{\frac{d}{d x} [\sqrt[3]{x} (x^{\frac{2}{3}} - 1)]}$

Step 2.3.6

Combine $- 1$ and $\frac{3}{3}$ .

$lim_{x \to 1} \frac{(x^{\frac{1}{3}} - 1) (\frac{2}{3} x^{\frac{2}{3} + \frac{- 1 \cdot 3}{3}}) + x^{\frac{2}{3}} \frac{d}{d x} [x^{\frac{1}{3}} - 1]}{\frac{d}{d x} [\sqrt[3]{x} (x^{\frac{2}{3}} - 1)]}$

Step 2.3.7

Combine the numerators over the common denominator.

$lim_{x \to 1} \frac{(x^{\frac{1}{3}} - 1) (\frac{2}{3} x^{\frac{2 - 1 \cdot 3}{3}}) + x^{\frac{2}{3}} \frac{d}{d x} [x^{\frac{1}{3}} - 1]}{\frac{d}{d x} [\sqrt[3]{x} (x^{\frac{2}{3}} - 1)]}$

Step 2.3.8

Simplify the numerator.

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Step 2.3.8.1

Multiply $- 1$ by $3$ .

$lim_{x \to 1} \frac{(x^{\frac{1}{3}} - 1) (\frac{2}{3} x^{\frac{2 - 3}{3}}) + x^{\frac{2}{3}} \frac{d}{d x} [x^{\frac{1}{3}} - 1]}{\frac{d}{d x} [\sqrt[3]{x} (x^{\frac{2}{3}} - 1)]}$

Step 2.3.8.2

Subtract $3$ from $2$ .

$lim_{x \to 1} \frac{(x^{\frac{1}{3}} - 1) (\frac{2}{3} x^{\frac{- 1}{3}}) + x^{\frac{2}{3}} \frac{d}{d x} [x^{\frac{1}{3}} - 1]}{\frac{d}{d x} [\sqrt[3]{x} (x^{\frac{2}{3}} - 1)]}$

Step 2.3.9

Move the negative in front of the fraction.

$lim_{x \to 1} \frac{(x^{\frac{1}{3}} - 1) (\frac{2}{3} x^{- \frac{1}{3}}) + x^{\frac{2}{3}} \frac{d}{d x} [x^{\frac{1}{3}} - 1]}{\frac{d}{d x} [\sqrt[3]{x} (x^{\frac{2}{3}} - 1)]}$

Step 2.3.10

Combine $\frac{2}{3}$ and $x^{- \frac{1}{3}}$ .

$lim_{x \to 1} \frac{(x^{\frac{1}{3}} - 1) \frac{2 x^{- \frac{1}{3}}}{3} + x^{\frac{2}{3}} \frac{d}{d x} [x^{\frac{1}{3}} - 1]}{\frac{d}{d x} [\sqrt[3]{x} (x^{\frac{2}{3}} - 1)]}$

Step 2.3.11

Move $x^{- \frac{1}{3}}$ to the denominator using the negative exponent rule $b^{- n} = \frac{1}{b^{n}}$ .

$lim_{x \to 1} \frac{(x^{\frac{1}{3}} - 1) \frac{2}{3 x^{\frac{1}{3}}} + x^{\frac{2}{3}} \frac{d}{d x} [x^{\frac{1}{3}} - 1]}{\frac{d}{d x} [\sqrt[3]{x} (x^{\frac{2}{3}} - 1)]}$

Step 2.3.12

By the Sum Rule, the derivative of $x^{\frac{1}{3}} - 1$ with respect to $x$ is $\frac{d}{d x} [x^{\frac{1}{3}}] + \frac{d}{d x} [- 1]$ .

$lim_{x \to 1} \frac{(x^{\frac{1}{3}} - 1) \frac{2}{3 x^{\frac{1}{3}}} + x^{\frac{2}{3}} (\frac{d}{d x} [x^{\frac{1}{3}}] + \frac{d}{d x} [- 1])}{\frac{d}{d x} [\sqrt[3]{x} (x^{\frac{2}{3}} - 1)]}$

Step 2.3.13

Differentiate using the Power Rule which states that $\frac{d}{d x} [x^{n}]$ is $n x^{n - 1}$ where $n = \frac{1}{3}$ .

$lim_{x \to 1} \frac{(x^{\frac{1}{3}} - 1) \frac{2}{3 x^{\frac{1}{3}}} + x^{\frac{2}{3}} (\frac{1}{3} x^{\frac{1}{3} - 1} + \frac{d}{d x} [- 1])}{\frac{d}{d x} [\sqrt[3]{x} (x^{\frac{2}{3}} - 1)]}$

Step 2.3.14

To write $- 1$ as a fraction with a common denominator, multiply by $\frac{3}{3}$ .

$lim_{x \to 1} \frac{(x^{\frac{1}{3}} - 1) \frac{2}{3 x^{\frac{1}{3}}} + x^{\frac{2}{3}} (\frac{1}{3} x^{\frac{1}{3} - 1 \cdot \frac{3}{3}} + \frac{d}{d x} [- 1])}{\frac{d}{d x} [\sqrt[3]{x} (x^{\frac{2}{3}} - 1)]}$

Step 2.3.15

Combine $- 1$ and $\frac{3}{3}$ .

$lim_{x \to 1} \frac{(x^{\frac{1}{3}} - 1) \frac{2}{3 x^{\frac{1}{3}}} + x^{\frac{2}{3}} (\frac{1}{3} x^{\frac{1}{3} + \frac{- 1 \cdot 3}{3}} + \frac{d}{d x} [- 1])}{\frac{d}{d x} [\sqrt[3]{x} (x^{\frac{2}{3}} - 1)]}$

Step 2.3.16

Combine the numerators over the common denominator.

$lim_{x \to 1} \frac{(x^{\frac{1}{3}} - 1) \frac{2}{3 x^{\frac{1}{3}}} + x^{\frac{2}{3}} (\frac{1}{3} x^{\frac{1 - 1 \cdot 3}{3}} + \frac{d}{d x} [- 1])}{\frac{d}{d x} [\sqrt[3]{x} (x^{\frac{2}{3}} - 1)]}$

Step 2.3.17

Simplify the numerator.

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Step 2.3.17.1

Multiply $- 1$ by $3$ .

$lim_{x \to 1} \frac{(x^{\frac{1}{3}} - 1) \frac{2}{3 x^{\frac{1}{3}}} + x^{\frac{2}{3}} (\frac{1}{3} x^{\frac{1 - 3}{3}} + \frac{d}{d x} [- 1])}{\frac{d}{d x} [\sqrt[3]{x} (x^{\frac{2}{3}} - 1)]}$

Step 2.3.17.2

Subtract $3$ from $1$ .

$lim_{x \to 1} \frac{(x^{\frac{1}{3}} - 1) \frac{2}{3 x^{\frac{1}{3}}} + x^{\frac{2}{3}} (\frac{1}{3} x^{\frac{- 2}{3}} + \frac{d}{d x} [- 1])}{\frac{d}{d x} [\sqrt[3]{x} (x^{\frac{2}{3}} - 1)]}$

Step 2.3.18

Move the negative in front of the fraction.

$lim_{x \to 1} \frac{(x^{\frac{1}{3}} - 1) \frac{2}{3 x^{\frac{1}{3}}} + x^{\frac{2}{3}} (\frac{1}{3} x^{- \frac{2}{3}} + \frac{d}{d x} [- 1])}{\frac{d}{d x} [\sqrt[3]{x} (x^{\frac{2}{3}} - 1)]}$

Step 2.3.19

Combine $\frac{1}{3}$ and $x^{- \frac{2}{3}}$ .

$lim_{x \to 1} \frac{(x^{\frac{1}{3}} - 1) \frac{2}{3 x^{\frac{1}{3}}} + x^{\frac{2}{3}} (\frac{x^{- \frac{2}{3}}}{3} + \frac{d}{d x} [- 1])}{\frac{d}{d x} [\sqrt[3]{x} (x^{\frac{2}{3}} - 1)]}$

Step 2.3.20

Move $x^{- \frac{2}{3}}$ to the denominator using the negative exponent rule $b^{- n} = \frac{1}{b^{n}}$ .

$lim_{x \to 1} \frac{(x^{\frac{1}{3}} - 1) \frac{2}{3 x^{\frac{1}{3}}} + x^{\frac{2}{3}} (\frac{1}{3 x^{\frac{2}{3}}} + \frac{d}{d x} [- 1])}{\frac{d}{d x} [\sqrt[3]{x} (x^{\frac{2}{3}} - 1)]}$

Step 2.3.21

Since $- 1$ is constant with respect to $x$ , the derivative of $- 1$ with respect to $x$ is $0$ .

$lim_{x \to 1} \frac{(x^{\frac{1}{3}} - 1) \frac{2}{3 x^{\frac{1}{3}}} + x^{\frac{2}{3}} (\frac{1}{3 x^{\frac{2}{3}}} + 0)}{\frac{d}{d x} [\sqrt[3]{x} (x^{\frac{2}{3}} - 1)]}$

Step 2.3.22

Add $\frac{1}{3 x^{\frac{2}{3}}}$ and $0$ .

$lim_{x \to 1} \frac{(x^{\frac{1}{3}} - 1) \frac{2}{3 x^{\frac{1}{3}}} + x^{\frac{2}{3}} \frac{1}{3 x^{\frac{2}{3}}}}{\frac{d}{d x} [\sqrt[3]{x} (x^{\frac{2}{3}} - 1)]}$

Step 2.3.23

Combine $x^{\frac{2}{3}}$ and $\frac{1}{3 x^{\frac{2}{3}}}$ .

$lim_{x \to 1} \frac{(x^{\frac{1}{3}} - 1) \frac{2}{3 x^{\frac{1}{3}}} + \frac{x^{\frac{2}{3}}}{3 x^{\frac{2}{3}}}}{\frac{d}{d x} [\sqrt[3]{x} (x^{\frac{2}{3}} - 1)]}$

Step 2.3.24

Cancel the common factor.

$lim_{x \to 1} \frac{(x^{\frac{1}{3}} - 1) \frac{2}{3 x^{\frac{1}{3}}} + \frac{x^{\frac{2}{3}}}{3 x^{\frac{2}{3}}}}{\frac{d}{d x} [\sqrt[3]{x} (x^{\frac{2}{3}} - 1)]}$

Step 2.3.25

Rewrite the expression.

$lim_{x \to 1} \frac{(x^{\frac{1}{3}} - 1) \frac{2}{3 x^{\frac{1}{3}}} + \frac{1}{3}}{\frac{d}{d x} [\sqrt[3]{x} (x^{\frac{2}{3}} - 1)]}$

Step 2.3.26

To write $(x^{\frac{1}{3}} - 1) \frac{2}{3 x^{\frac{1}{3}}}$ as a fraction with a common denominator, multiply by $\frac{3}{3}$ .

$lim_{x \to 1} \frac{(x^{\frac{1}{3}} - 1) \frac{2}{3 x^{\frac{1}{3}}} \cdot \frac{3}{3} + \frac{1}{3}}{\frac{d}{d x} [\sqrt[3]{x} (x^{\frac{2}{3}} - 1)]}$

Step 2.3.27

Combine $(x^{\frac{1}{3}} - 1) \frac{2}{3 x^{\frac{1}{3}}}$ and $\frac{3}{3}$ .

$lim_{x \to 1} \frac{\frac{(x^{\frac{1}{3}} - 1) \frac{2}{3 x^{\frac{1}{3}}} \cdot 3}{3} + \frac{1}{3}}{\frac{d}{d x} [\sqrt[3]{x} (x^{\frac{2}{3}} - 1)]}$

Step 2.3.28

Combine the numerators over the common denominator.

$lim_{x \to 1} \frac{\frac{(x^{\frac{1}{3}} - 1) \frac{2}{3 x^{\frac{1}{3}}} \cdot 3 + 1}{3}}{\frac{d}{d x} [\sqrt[3]{x} (x^{\frac{2}{3}} - 1)]}$

Step 2.3.29

Combine $3$ and $\frac{2}{3 x^{\frac{1}{3}}}$ .

$lim_{x \to 1} \frac{\frac{(x^{\frac{1}{3}} - 1) \frac{3 \cdot 2}{3 x^{\frac{1}{3}}} + 1}{3}}{\frac{d}{d x} [\sqrt[3]{x} (x^{\frac{2}{3}} - 1)]}$

Step 2.3.30

Multiply $3$ by $2$ .

$lim_{x \to 1} \frac{\frac{(x^{\frac{1}{3}} - 1) \frac{6}{3 x^{\frac{1}{3}}} + 1}{3}}{\frac{d}{d x} [\sqrt[3]{x} (x^{\frac{2}{3}} - 1)]}$

Step 2.3.31

Factor $3$ out of $6$ .

$lim_{x \to 1} \frac{\frac{(x^{\frac{1}{3}} - 1) \frac{3 \cdot 2}{3 x^{\frac{1}{3}}} + 1}{3}}{\frac{d}{d x} [\sqrt[3]{x} (x^{\frac{2}{3}} - 1)]}$

Step 2.3.32

Cancel the common factors.

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Step 2.3.32.1

Factor $3$ out of $3 x^{\frac{1}{3}}$ .

$lim_{x \to 1} \frac{\frac{(x^{\frac{1}{3}} - 1) \frac{3 \cdot 2}{3 (x^{\frac{1}{3}})} + 1}{3}}{\frac{d}{d x} [\sqrt[3]{x} (x^{\frac{2}{3}} - 1)]}$

Step 2.3.32.2

Cancel the common factor.

$lim_{x \to 1} \frac{\frac{(x^{\frac{1}{3}} - 1) \frac{3 \cdot 2}{3 x^{\frac{1}{3}}} + 1}{3}}{\frac{d}{d x} [\sqrt[3]{x} (x^{\frac{2}{3}} - 1)]}$

Step 2.3.32.3

Rewrite the expression.

$lim_{x \to 1} \frac{\frac{(x^{\frac{1}{3}} - 1) \frac{2}{x^{\frac{1}{3}}} + 1}{3}}{\frac{d}{d x} [\sqrt[3]{x} (x^{\frac{2}{3}} - 1)]}$

Step 2.3.33

Simplify.

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Step 2.3.33.1

Apply the distributive property.

$lim_{x \to 1} \frac{\frac{x^{\frac{1}{3}} \frac{2}{x^{\frac{1}{3}}} - 1 \frac{2}{x^{\frac{1}{3}}} + 1}{3}}{\frac{d}{d x} [\sqrt[3]{x} (x^{\frac{2}{3}} - 1)]}$

Step 2.3.33.2

Simplify the numerator.

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Step 2.3.33.2.1

Simplify each term.

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Step 2.3.33.2.1.1

Cancel the common factor of $x^{\frac{1}{3}}$ .

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Step 2.3.33.2.1.1.1

Cancel the common factor.

$lim_{x \to 1} \frac{\frac{x^{\frac{1}{3}} \frac{2}{x^{\frac{1}{3}}} - 1 \frac{2}{x^{\frac{1}{3}}} + 1}{3}}{\frac{d}{d x} [\sqrt[3]{x} (x^{\frac{2}{3}} - 1)]}$

Step 2.3.33.2.1.1.2

Rewrite the expression.

$lim_{x \to 1} \frac{\frac{2 - 1 \frac{2}{x^{\frac{1}{3}}} + 1}{3}}{\frac{d}{d x} [\sqrt[3]{x} (x^{\frac{2}{3}} - 1)]}$

Step 2.3.33.2.1.2

Rewrite $- 1 \frac{2}{x^{\frac{1}{3}}}$ as $- \frac{2}{x^{\frac{1}{3}}}$ .

$lim_{x \to 1} \frac{\frac{2 - \frac{2}{x^{\frac{1}{3}}} + 1}{3}}{\frac{d}{d x} [\sqrt[3]{x} (x^{\frac{2}{3}} - 1)]}$

Step 2.3.33.2.2

Add $2$ and $1$ .

$lim_{x \to 1} \frac{\frac{3 - \frac{2}{x^{\frac{1}{3}}}}{3}}{\frac{d}{d x} [\sqrt[3]{x} (x^{\frac{2}{3}} - 1)]}$

Step 2.3.33.3

Simplify the numerator.

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Step 2.3.33.3.1

To write $3$ as a fraction with a common denominator, multiply by $\frac{x^{\frac{1}{3}}}{x^{\frac{1}{3}}}$ .

$lim_{x \to 1} \frac{\frac{\frac{3 x^{\frac{1}{3}}}{x^{\frac{1}{3}}} - \frac{2}{x^{\frac{1}{3}}}}{3}}{\frac{d}{d x} [\sqrt[3]{x} (x^{\frac{2}{3}} - 1)]}$

Step 2.3.33.3.2

Combine the numerators over the common denominator.

$lim_{x \to 1} \frac{\frac{\frac{3 x^{\frac{1}{3}} - 2}{x^{\frac{1}{3}}}}{3}}{\frac{d}{d x} [\sqrt[3]{x} (x^{\frac{2}{3}} - 1)]}$

Step 2.3.33.4

Multiply the numerator by the reciprocal of the denominator.

$lim_{x \to 1} \frac{\frac{3 x^{\frac{1}{3}} - 2}{x^{\frac{1}{3}}} \cdot \frac{1}{3}}{\frac{d}{d x} [\sqrt[3]{x} (x^{\frac{2}{3}} - 1)]}$

Step 2.3.33.5

Multiply $\frac{3 x^{\frac{1}{3}} - 2}{x^{\frac{1}{3}}}$ by $\frac{1}{3}$ .

$lim_{x \to 1} \frac{\frac{3 x^{\frac{1}{3}} - 2}{x^{\frac{1}{3}} \cdot 3}}{\frac{d}{d x} [\sqrt[3]{x} (x^{\frac{2}{3}} - 1)]}$

Step 2.3.33.6

Move $3$ to the left of $x^{\frac{1}{3}}$ .

$lim_{x \to 1} \frac{\frac{3 x^{\frac{1}{3}} - 2}{3 x^{\frac{1}{3}}}}{\frac{d}{d x} [\sqrt[3]{x} (x^{\frac{2}{3}} - 1)]}$

Step 2.3.34

Use $\sqrt[n]{a^{x}} = a^{\frac{x}{n}}$ to rewrite $\sqrt[3]{x}$ as $x^{\frac{1}{3}}$ .

$lim_{x \to 1} \frac{\frac{3 x^{\frac{1}{3}} - 2}{3 x^{\frac{1}{3}}}}{\frac{d}{d x} [x^{\frac{1}{3}} (x^{\frac{2}{3}} - 1)]}$

Step 2.3.35

Differentiate using the Product Rule which states that $\frac{d}{d x} [f (x) g (x)]$ is $f (x) \frac{d}{d x} [g (x)] + g (x) \frac{d}{d x} [f (x)]$ where $f (x) = x^{\frac{1}{3}}$ and $g (x) = x^{\frac{2}{3}} - 1$ .

$lim_{x \to 1} \frac{\frac{3 x^{\frac{1}{3}} - 2}{3 x^{\frac{1}{3}}}}{x^{\frac{1}{3}} \frac{d}{d x} [x^{\frac{2}{3}} - 1] + (x^{\frac{2}{3}} - 1) \frac{d}{d x} [x^{\frac{1}{3}}]}$

Step 2.3.36

By the Sum Rule, the derivative of $x^{\frac{2}{3}} - 1$ with respect to $x$ is $\frac{d}{d x} [x^{\frac{2}{3}}] + \frac{d}{d x} [- 1]$ .

$lim_{x \to 1} \frac{\frac{3 x^{\frac{1}{3}} - 2}{3 x^{\frac{1}{3}}}}{x^{\frac{1}{3}} (\frac{d}{d x} [x^{\frac{2}{3}}] + \frac{d}{d x} [- 1]) + (x^{\frac{2}{3}} - 1) \frac{d}{d x} [x^{\frac{1}{3}}]}$

Step 2.3.37

Differentiate using the Power Rule which states that $\frac{d}{d x} [x^{n}]$ is $n x^{n - 1}$ where $n = \frac{2}{3}$ .

$lim_{x \to 1} \frac{\frac{3 x^{\frac{1}{3}} - 2}{3 x^{\frac{1}{3}}}}{x^{\frac{1}{3}} (\frac{2}{3} x^{\frac{2}{3} - 1} + \frac{d}{d x} [- 1]) + (x^{\frac{2}{3}} - 1) \frac{d}{d x} [x^{\frac{1}{3}}]}$

Step 2.3.38

To write $- 1$ as a fraction with a common denominator, multiply by $\frac{3}{3}$ .

$lim_{x \to 1} \frac{\frac{3 x^{\frac{1}{3}} - 2}{3 x^{\frac{1}{3}}}}{x^{\frac{1}{3}} (\frac{2}{3} x^{\frac{2}{3} - 1 \cdot \frac{3}{3}} + \frac{d}{d x} [- 1]) + (x^{\frac{2}{3}} - 1) \frac{d}{d x} [x^{\frac{1}{3}}]}$

Step 2.3.39

Combine $- 1$ and $\frac{3}{3}$ .

$lim_{x \to 1} \frac{\frac{3 x^{\frac{1}{3}} - 2}{3 x^{\frac{1}{3}}}}{x^{\frac{1}{3}} (\frac{2}{3} x^{\frac{2}{3} + \frac{- 1 \cdot 3}{3}} + \frac{d}{d x} [- 1]) + (x^{\frac{2}{3}} - 1) \frac{d}{d x} [x^{\frac{1}{3}}]}$

Step 2.3.40

Combine the numerators over the common denominator.

$lim_{x \to 1} \frac{\frac{3 x^{\frac{1}{3}} - 2}{3 x^{\frac{1}{3}}}}{x^{\frac{1}{3}} (\frac{2}{3} x^{\frac{2 - 1 \cdot 3}{3}} + \frac{d}{d x} [- 1]) + (x^{\frac{2}{3}} - 1) \frac{d}{d x} [x^{\frac{1}{3}}]}$

Step 2.3.41

Simplify the numerator.

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Step 2.3.41.1

Multiply $- 1$ by $3$ .

$lim_{x \to 1} \frac{\frac{3 x^{\frac{1}{3}} - 2}{3 x^{\frac{1}{3}}}}{x^{\frac{1}{3}} (\frac{2}{3} x^{\frac{2 - 3}{3}} + \frac{d}{d x} [- 1]) + (x^{\frac{2}{3}} - 1) \frac{d}{d x} [x^{\frac{1}{3}}]}$

Step 2.3.41.2

Subtract $3$ from $2$ .

$lim_{x \to 1} \frac{\frac{3 x^{\frac{1}{3}} - 2}{3 x^{\frac{1}{3}}}}{x^{\frac{1}{3}} (\frac{2}{3} x^{\frac{- 1}{3}} + \frac{d}{d x} [- 1]) + (x^{\frac{2}{3}} - 1) \frac{d}{d x} [x^{\frac{1}{3}}]}$

Step 2.3.42

Move the negative in front of the fraction.

$lim_{x \to 1} \frac{\frac{3 x^{\frac{1}{3}} - 2}{3 x^{\frac{1}{3}}}}{x^{\frac{1}{3}} (\frac{2}{3} x^{- \frac{1}{3}} + \frac{d}{d x} [- 1]) + (x^{\frac{2}{3}} - 1) \frac{d}{d x} [x^{\frac{1}{3}}]}$

Step 2.3.43

Combine $\frac{2}{3}$ and $x^{- \frac{1}{3}}$ .

$lim_{x \to 1} \frac{\frac{3 x^{\frac{1}{3}} - 2}{3 x^{\frac{1}{3}}}}{x^{\frac{1}{3}} (\frac{2 x^{- \frac{1}{3}}}{3} + \frac{d}{d x} [- 1]) + (x^{\frac{2}{3}} - 1) \frac{d}{d x} [x^{\frac{1}{3}}]}$

Step 2.3.44

Move $x^{- \frac{1}{3}}$ to the denominator using the negative exponent rule $b^{- n} = \frac{1}{b^{n}}$ .

$lim_{x \to 1} \frac{\frac{3 x^{\frac{1}{3}} - 2}{3 x^{\frac{1}{3}}}}{x^{\frac{1}{3}} (\frac{2}{3 x^{\frac{1}{3}}} + \frac{d}{d x} [- 1]) + (x^{\frac{2}{3}} - 1) \frac{d}{d x} [x^{\frac{1}{3}}]}$

Step 2.3.45

Since $- 1$ is constant with respect to $x$ , the derivative of $- 1$ with respect to $x$ is $0$ .

$lim_{x \to 1} \frac{\frac{3 x^{\frac{1}{3}} - 2}{3 x^{\frac{1}{3}}}}{x^{\frac{1}{3}} (\frac{2}{3 x^{\frac{1}{3}}} + 0) + (x^{\frac{2}{3}} - 1) \frac{d}{d x} [x^{\frac{1}{3}}]}$

Step 2.3.46

Add $\frac{2}{3 x^{\frac{1}{3}}}$ and $0$ .

$lim_{x \to 1} \frac{\frac{3 x^{\frac{1}{3}} - 2}{3 x^{\frac{1}{3}}}}{x^{\frac{1}{3}} \frac{2}{3 x^{\frac{1}{3}}} + (x^{\frac{2}{3}} - 1) \frac{d}{d x} [x^{\frac{1}{3}}]}$

Step 2.3.47

Combine $x^{\frac{1}{3}}$ and $\frac{2}{3 x^{\frac{1}{3}}}$ .

$lim_{x \to 1} \frac{\frac{3 x^{\frac{1}{3}} - 2}{3 x^{\frac{1}{3}}}}{\frac{x^{\frac{1}{3}} \cdot 2}{3 x^{\frac{1}{3}}} + (x^{\frac{2}{3}} - 1) \frac{d}{d x} [x^{\frac{1}{3}}]}$

Step 2.3.48

Move $2$ to the left of $x^{\frac{1}{3}}$ .

$lim_{x \to 1} \frac{\frac{3 x^{\frac{1}{3}} - 2}{3 x^{\frac{1}{3}}}}{\frac{2 \cdot x^{\frac{1}{3}}}{3 x^{\frac{1}{3}}} + (x^{\frac{2}{3}} - 1) \frac{d}{d x} [x^{\frac{1}{3}}]}$

Step 2.3.49

Cancel the common factor.

$lim_{x \to 1} \frac{\frac{3 x^{\frac{1}{3}} - 2}{3 x^{\frac{1}{3}}}}{\frac{2 x^{\frac{1}{3}}}{3 x^{\frac{1}{3}}} + (x^{\frac{2}{3}} - 1) \frac{d}{d x} [x^{\frac{1}{3}}]}$

Step 2.3.50

Rewrite the expression.

$lim_{x \to 1} \frac{\frac{3 x^{\frac{1}{3}} - 2}{3 x^{\frac{1}{3}}}}{\frac{2}{3} + (x^{\frac{2}{3}} - 1) \frac{d}{d x} [x^{\frac{1}{3}}]}$

Step 2.3.51

Differentiate using the Power Rule which states that $\frac{d}{d x} [x^{n}]$ is $n x^{n - 1}$ where $n = \frac{1}{3}$ .

$lim_{x \to 1} \frac{\frac{3 x^{\frac{1}{3}} - 2}{3 x^{\frac{1}{3}}}}{\frac{2}{3} + (x^{\frac{2}{3}} - 1) (\frac{1}{3} x^{\frac{1}{3} - 1})}$

Step 2.3.52

To write $- 1$ as a fraction with a common denominator, multiply by $\frac{3}{3}$ .

$lim_{x \to 1} \frac{\frac{3 x^{\frac{1}{3}} - 2}{3 x^{\frac{1}{3}}}}{\frac{2}{3} + (x^{\frac{2}{3}} - 1) (\frac{1}{3} x^{\frac{1}{3} - 1 \cdot \frac{3}{3}})}$

Step 2.3.53

Combine $- 1$ and $\frac{3}{3}$ .

$lim_{x \to 1} \frac{\frac{3 x^{\frac{1}{3}} - 2}{3 x^{\frac{1}{3}}}}{\frac{2}{3} + (x^{\frac{2}{3}} - 1) (\frac{1}{3} x^{\frac{1}{3} + \frac{- 1 \cdot 3}{3}})}$

Step 2.3.54

Combine the numerators over the common denominator.

$lim_{x \to 1} \frac{\frac{3 x^{\frac{1}{3}} - 2}{3 x^{\frac{1}{3}}}}{\frac{2}{3} + (x^{\frac{2}{3}} - 1) (\frac{1}{3} x^{\frac{1 - 1 \cdot 3}{3}})}$

Step 2.3.55

Simplify the numerator.

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Step 2.3.55.1

Multiply $- 1$ by $3$ .

$lim_{x \to 1} \frac{\frac{3 x^{\frac{1}{3}} - 2}{3 x^{\frac{1}{3}}}}{\frac{2}{3} + (x^{\frac{2}{3}} - 1) (\frac{1}{3} x^{\frac{1 - 3}{3}})}$

Step 2.3.55.2

Subtract $3$ from $1$ .

$lim_{x \to 1} \frac{\frac{3 x^{\frac{1}{3}} - 2}{3 x^{\frac{1}{3}}}}{\frac{2}{3} + (x^{\frac{2}{3}} - 1) (\frac{1}{3} x^{\frac{- 2}{3}})}$

Step 2.3.56

Move the negative in front of the fraction.

$lim_{x \to 1} \frac{\frac{3 x^{\frac{1}{3}} - 2}{3 x^{\frac{1}{3}}}}{\frac{2}{3} + (x^{\frac{2}{3}} - 1) (\frac{1}{3} x^{- \frac{2}{3}})}$

Step 2.3.57

Combine $\frac{1}{3}$ and $x^{- \frac{2}{3}}$ .

$lim_{x \to 1} \frac{\frac{3 x^{\frac{1}{3}} - 2}{3 x^{\frac{1}{3}}}}{\frac{2}{3} + (x^{\frac{2}{3}} - 1) \frac{x^{- \frac{2}{3}}}{3}}$

Step 2.3.58

Move $x^{- \frac{2}{3}}$ to the denominator using the negative exponent rule $b^{- n} = \frac{1}{b^{n}}$ .

$lim_{x \to 1} \frac{\frac{3 x^{\frac{1}{3}} - 2}{3 x^{\frac{1}{3}}}}{\frac{2}{3} + (x^{\frac{2}{3}} - 1) \frac{1}{3 x^{\frac{2}{3}}}}$

Step 2.3.59

To write $(x^{\frac{2}{3}} - 1) \frac{1}{3 x^{\frac{2}{3}}}$ as a fraction with a common denominator, multiply by $\frac{3}{3}$ .

$lim_{x \to 1} \frac{\frac{3 x^{\frac{1}{3}} - 2}{3 x^{\frac{1}{3}}}}{\frac{2}{3} + (x^{\frac{2}{3}} - 1) \frac{1}{3 x^{\frac{2}{3}}} \cdot \frac{3}{3}}$

Step 2.3.60

Combine $(x^{\frac{2}{3}} - 1) \frac{1}{3 x^{\frac{2}{3}}}$ and $\frac{3}{3}$ .

$lim_{x \to 1} \frac{\frac{3 x^{\frac{1}{3}} - 2}{3 x^{\frac{1}{3}}}}{\frac{2}{3} + \frac{(x^{\frac{2}{3}} - 1) \frac{1}{3 x^{\frac{2}{3}}} \cdot 3}{3}}$

Step 2.3.61

Combine the numerators over the common denominator.

$lim_{x \to 1} \frac{\frac{3 x^{\frac{1}{3}} - 2}{3 x^{\frac{1}{3}}}}{\frac{2 + (x^{\frac{2}{3}} - 1) \frac{1}{3 x^{\frac{2}{3}}} \cdot 3}{3}}$

Step 2.3.62

Combine $3$ and $\frac{1}{3 x^{\frac{2}{3}}}$ .

$lim_{x \to 1} \frac{\frac{3 x^{\frac{1}{3}} - 2}{3 x^{\frac{1}{3}}}}{\frac{2 + (x^{\frac{2}{3}} - 1) \frac{3}{3 x^{\frac{2}{3}}}}{3}}$

Step 2.3.63

Cancel the common factor.

$lim_{x \to 1} \frac{\frac{3 x^{\frac{1}{3}} - 2}{3 x^{\frac{1}{3}}}}{\frac{2 + (x^{\frac{2}{3}} - 1) \frac{3}{3 x^{\frac{2}{3}}}}{3}}$

Step 2.3.64

Rewrite the expression.

$lim_{x \to 1} \frac{\frac{3 x^{\frac{1}{3}} - 2}{3 x^{\frac{1}{3}}}}{\frac{2 + (x^{\frac{2}{3}} - 1) \frac{1}{x^{\frac{2}{3}}}}{3}}$

Step 2.3.65

Simplify.

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Step 2.3.65.1

Apply the distributive property.

$lim_{x \to 1} \frac{\frac{3 x^{\frac{1}{3}} - 2}{3 x^{\frac{1}{3}}}}{\frac{2 + x^{\frac{2}{3}} \frac{1}{x^{\frac{2}{3}}} - 1 \frac{1}{x^{\frac{2}{3}}}}{3}}$

Step 2.3.65.2

Simplify the numerator.

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Step 2.3.65.2.1

Simplify each term.

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Step 2.3.65.2.1.1

Cancel the common factor of $x^{\frac{2}{3}}$ .

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Step 2.3.65.2.1.1.1

Cancel the common factor.

$lim_{x \to 1} \frac{\frac{3 x^{\frac{1}{3}} - 2}{3 x^{\frac{1}{3}}}}{\frac{2 + x^{\frac{2}{3}} \frac{1}{x^{\frac{2}{3}}} - 1 \frac{1}{x^{\frac{2}{3}}}}{3}}$

Step 2.3.65.2.1.1.2

Rewrite the expression.

$lim_{x \to 1} \frac{\frac{3 x^{\frac{1}{3}} - 2}{3 x^{\frac{1}{3}}}}{\frac{2 + 1 - 1 \frac{1}{x^{\frac{2}{3}}}}{3}}$

Step 2.3.65.2.1.2

Rewrite $- 1 \frac{1}{x^{\frac{2}{3}}}$ as $- \frac{1}{x^{\frac{2}{3}}}$ .

$lim_{x \to 1} \frac{\frac{3 x^{\frac{1}{3}} - 2}{3 x^{\frac{1}{3}}}}{\frac{2 + 1 - \frac{1}{x^{\frac{2}{3}}}}{3}}$

Step 2.3.65.2.2

Add $2$ and $1$ .

$lim_{x \to 1} \frac{\frac{3 x^{\frac{1}{3}} - 2}{3 x^{\frac{1}{3}}}}{\frac{3 - \frac{1}{x^{\frac{2}{3}}}}{3}}$

Step 2.3.65.3

Simplify the numerator.

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Step 2.3.65.3.1

To write $3$ as a fraction with a common denominator, multiply by $\frac{x^{\frac{2}{3}}}{x^{\frac{2}{3}}}$ .

$lim_{x \to 1} \frac{\frac{3 x^{\frac{1}{3}} - 2}{3 x^{\frac{1}{3}}}}{\frac{\frac{3 x^{\frac{2}{3}}}{x^{\frac{2}{3}}} - \frac{1}{x^{\frac{2}{3}}}}{3}}$

Step 2.3.65.3.2

Combine the numerators over the common denominator.

$lim_{x \to 1} \frac{\frac{3 x^{\frac{1}{3}} - 2}{3 x^{\frac{1}{3}}}}{\frac{\frac{3 x^{\frac{2}{3}} - 1}{x^{\frac{2}{3}}}}{3}}$

Step 2.3.65.4

Multiply the numerator by the reciprocal of the denominator.

$lim_{x \to 1} \frac{\frac{3 x^{\frac{1}{3}} - 2}{3 x^{\frac{1}{3}}}}{\frac{3 x^{\frac{2}{3}} - 1}{x^{\frac{2}{3}}} \cdot \frac{1}{3}}$

Step 2.3.65.5

Multiply $\frac{3 x^{\frac{2}{3}} - 1}{x^{\frac{2}{3}}}$ by $\frac{1}{3}$ .

$lim_{x \to 1} \frac{\frac{3 x^{\frac{1}{3}} - 2}{3 x^{\frac{1}{3}}}}{\frac{3 x^{\frac{2}{3}} - 1}{x^{\frac{2}{3}} \cdot 3}}$

Step 2.3.65.6

Move $3$ to the left of $x^{\frac{2}{3}}$ .

$lim_{x \to 1} \frac{\frac{3 x^{\frac{1}{3}} - 2}{3 x^{\frac{1}{3}}}}{\frac{3 x^{\frac{2}{3}} - 1}{3 x^{\frac{2}{3}}}}$

Step 2.4

Multiply the numerator by the reciprocal of the denominator.

$lim_{x \to 1} \frac{3 x^{\frac{1}{3}} - 2}{3 x^{\frac{1}{3}}} \cdot \frac{3 x^{\frac{2}{3}}}{3 x^{\frac{2}{3}} - 1}$

Step 2.5

Convert fractional exponents to radicals.

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Step 2.5.1

Rewrite $x^{\frac{1}{3}}$ as $\sqrt[3]{x}$ .

$lim_{x \to 1} \frac{3 \sqrt[3]{x} - 2}{3 x^{\frac{1}{3}}} \cdot \frac{3 x^{\frac{2}{3}}}{3 x^{\frac{2}{3}} - 1}$

Step 2.5.2

Rewrite $x^{\frac{1}{3}}$ as $\sqrt[3]{x}$ .

$lim_{x \to 1} \frac{3 \sqrt[3]{x} - 2}{3 \sqrt[3]{x}} \cdot \frac{3 x^{\frac{2}{3}}}{3 x^{\frac{2}{3}} - 1}$

Step 2.6

Multiply $\frac{3 \sqrt[3]{x} - 2}{3 \sqrt[3]{x}}$ by $\frac{3 x^{\frac{2}{3}}}{3 x^{\frac{2}{3}} - 1}$ .

$lim_{x \to 1} \frac{(3 \sqrt[3]{x} - 2) (3 x^{\frac{2}{3}})}{3 \sqrt[3]{x} (3 x^{\frac{2}{3}} - 1)}$

Step 2.7

Reduce.

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Step 2.7.1

Cancel the common factor.

$lim_{x \to 1} \frac{(3 \sqrt[3]{x} - 2) (3 x^{\frac{2}{3}})}{3 \sqrt[3]{x} (3 x^{\frac{2}{3}} - 1)}$

Step 2.7.2

Rewrite the expression.

$lim_{x \to 1} \frac{(3 \sqrt[3]{x} - 2) (x^{\frac{2}{3}})}{\sqrt[3]{x} (3 x^{\frac{2}{3}} - 1)}$

Step 3

Evaluate the limit.

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Step 3.1

Split the limit using the Limits Quotient Rule on the limit as $x$ approaches $1$ .

$\frac{lim_{x \to 1} (3 \sqrt[3]{x} - 2) (x^{\frac{2}{3}})}{lim_{x \to 1} \sqrt[3]{x} (3 x^{\frac{2}{3}} - 1)}$

Step 3.2

Split the limit using the Product of Limits Rule on the limit as $x$ approaches $1$ .

$\frac{lim_{x \to 1} 3 \sqrt[3]{x} - 2 \cdot lim_{x \to 1} x^{\frac{2}{3}}}{lim_{x \to 1} \sqrt[3]{x} (3 x^{\frac{2}{3}} - 1)}$

Step 3.3

Split the limit using the Sum of Limits Rule on the limit as $x$ approaches $1$ .

$\frac{(lim_{x \to 1} 3 \sqrt[3]{x} - lim_{x \to 1} 2) \cdot lim_{x \to 1} x^{\frac{2}{3}}}{lim_{x \to 1} \sqrt[3]{x} (3 x^{\frac{2}{3}} - 1)}$

Step 3.4

Move the term $3$ outside of the limit because it is constant with respect to $x$ .

$\frac{(3 lim_{x \to 1} \sqrt[3]{x} - lim_{x \to 1} 2) \cdot lim_{x \to 1} x^{\frac{2}{3}}}{lim_{x \to 1} \sqrt[3]{x} (3 x^{\frac{2}{3}} - 1)}$

Step 3.5

Move the limit under the radical sign.

$\frac{(3 \sqrt[3]{lim_{x \to 1} x} - lim_{x \to 1} 2) \cdot lim_{x \to 1} x^{\frac{2}{3}}}{lim_{x \to 1} \sqrt[3]{x} (3 x^{\frac{2}{3}} - 1)}$

Step 3.6

Evaluate the limit of $2$ which is constant as $x$ approaches $1$ .

$\frac{(3 \sqrt[3]{lim_{x \to 1} x} - 1 \cdot 2) \cdot lim_{x \to 1} x^{\frac{2}{3}}}{lim_{x \to 1} \sqrt[3]{x} (3 x^{\frac{2}{3}} - 1)}$

Step 3.7

Move the exponent $\frac{2}{3}$ from $x^{\frac{2}{3}}$ outside the limit using the Limits Power Rule.

$\frac{(3 \sqrt[3]{lim_{x \to 1} x} - 1 \cdot 2) \cdot {(lim_{x \to 1} x)}^{\frac{2}{3}}}{lim_{x \to 1} \sqrt[3]{x} (3 x^{\frac{2}{3}} - 1)}$

Step 3.8

Split the limit using the Product of Limits Rule on the limit as $x$ approaches $1$ .

$\frac{(3 \sqrt[3]{lim_{x \to 1} x} - 1 \cdot 2) \cdot {(lim_{x \to 1} x)}^{\frac{2}{3}}}{lim_{x \to 1} \sqrt[3]{x} \cdot lim_{x \to 1} 3 x^{\frac{2}{3}} - 1}$

Step 3.9

Move the limit under the radical sign.

$\frac{(3 \sqrt[3]{lim_{x \to 1} x} - 1 \cdot 2) \cdot {(lim_{x \to 1} x)}^{\frac{2}{3}}}{\sqrt[3]{lim_{x \to 1} x} \cdot lim_{x \to 1} 3 x^{\frac{2}{3}} - 1}$

Step 3.10

Split the limit using the Sum of Limits Rule on the limit as $x$ approaches $1$ .

$\frac{(3 \sqrt[3]{lim_{x \to 1} x} - 1 \cdot 2) \cdot {(lim_{x \to 1} x)}^{\frac{2}{3}}}{\sqrt[3]{lim_{x \to 1} x} \cdot (lim_{x \to 1} 3 x^{\frac{2}{3}} - lim_{x \to 1} 1)}$

Step 3.11

Move the term $3$ outside of the limit because it is constant with respect to $x$ .

$\frac{(3 \sqrt[3]{lim_{x \to 1} x} - 1 \cdot 2) \cdot {(lim_{x \to 1} x)}^{\frac{2}{3}}}{\sqrt[3]{lim_{x \to 1} x} \cdot (3 lim_{x \to 1} x^{\frac{2}{3}} - lim_{x \to 1} 1)}$

Step 3.12

Move the exponent $\frac{2}{3}$ from $x^{\frac{2}{3}}$ outside the limit using the Limits Power Rule.

$\frac{(3 \sqrt[3]{lim_{x \to 1} x} - 1 \cdot 2) \cdot {(lim_{x \to 1} x)}^{\frac{2}{3}}}{\sqrt[3]{lim_{x \to 1} x} \cdot (3 {(lim_{x \to 1} x)}^{\frac{2}{3}} - lim_{x \to 1} 1)}$

Step 3.13

Evaluate the limit of $1$ which is constant as $x$ approaches $1$ .

$\frac{(3 \sqrt[3]{lim_{x \to 1} x} - 1 \cdot 2) \cdot {(lim_{x \to 1} x)}^{\frac{2}{3}}}{\sqrt[3]{lim_{x \to 1} x} \cdot (3 {(lim_{x \to 1} x)}^{\frac{2}{3}} - 1 \cdot 1)}$

Step 4

Evaluate the limits by plugging in $1$ for all occurrences of $x$ .

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Step 4.1

Evaluate the limit of $x$ by plugging in $1$ for $x$ .

$\frac{(3 \sqrt[3]{1} - 1 \cdot 2) \cdot {(lim_{x \to 1} x)}^{\frac{2}{3}}}{\sqrt[3]{lim_{x \to 1} x} \cdot (3 {(lim_{x \to 1} x)}^{\frac{2}{3}} - 1 \cdot 1)}$

Step 4.2

Evaluate the limit of $x$ by plugging in $1$ for $x$ .

$\frac{(3 \sqrt[3]{1} - 1 \cdot 2) \cdot 1^{\frac{2}{3}}}{\sqrt[3]{lim_{x \to 1} x} \cdot (3 {(lim_{x \to 1} x)}^{\frac{2}{3}} - 1 \cdot 1)}$

Step 4.3

Evaluate the limit of $x$ by plugging in $1$ for $x$ .

$\frac{(3 \sqrt[3]{1} - 1 \cdot 2) \cdot 1^{\frac{2}{3}}}{\sqrt[3]{1} \cdot (3 {(lim_{x \to 1} x)}^{\frac{2}{3}} - 1 \cdot 1)}$

Step 4.4

Evaluate the limit of $x$ by plugging in $1$ for $x$ .

$\frac{(3 \sqrt[3]{1} - 1 \cdot 2) \cdot 1^{\frac{2}{3}}}{\sqrt[3]{1} \cdot (3 \cdot 1^{\frac{2}{3}} - 1 \cdot 1)}$

Step 5

Simplify the answer.

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Step 5.1

Simplify the numerator.

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Step 5.1.1

Any root of $1$ is $1$ .

$\frac{(3 \cdot 1 - 1 \cdot 2) \cdot 1^{\frac{2}{3}}}{\sqrt[3]{1} \cdot (3 \cdot 1^{\frac{2}{3}} - 1 \cdot 1)}$

Step 5.1.2

Multiply $3$ by $1$ .

$\frac{(3 - 1 \cdot 2) \cdot 1^{\frac{2}{3}}}{\sqrt[3]{1} \cdot (3 \cdot 1^{\frac{2}{3}} - 1 \cdot 1)}$

Step 5.1.3

Multiply $- 1$ by $2$ .

$\frac{(3 - 2) \cdot 1^{\frac{2}{3}}}{\sqrt[3]{1} \cdot (3 \cdot 1^{\frac{2}{3}} - 1 \cdot 1)}$

Step 5.1.4

Subtract $2$ from $3$ .

$\frac{1 \cdot 1^{\frac{2}{3}}}{\sqrt[3]{1} \cdot (3 \cdot 1^{\frac{2}{3}} - 1 \cdot 1)}$

Step 5.1.5

Multiply $1^{\frac{2}{3}}$ by $1$ .

$\frac{1^{\frac{2}{3}}}{\sqrt[3]{1} \cdot (3 \cdot 1^{\frac{2}{3}} - 1 \cdot 1)}$

Step 5.1.6

One to any power is one.

$\frac{1}{\sqrt[3]{1} \cdot (3 \cdot 1^{\frac{2}{3}} - 1 \cdot 1)}$

Step 5.2

Simplify the denominator.

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Step 5.2.1

One to any power is one.

$\frac{1}{\sqrt[3]{1} (3 \cdot 1 - 1 \cdot 1)}$

Step 5.2.2

Multiply $3$ by $1$ .

$\frac{1}{\sqrt[3]{1} (3 - 1 \cdot 1)}$

Step 5.2.3

Multiply $- 1$ by $1$ .

$\frac{1}{\sqrt[3]{1} (3 - 1)}$

Step 5.2.4

Subtract $1$ from $3$ .

$\frac{1}{\sqrt[3]{1} \cdot 2}$

Step 5.2.5

Any root of $1$ is $1$ .

$\frac{1}{1 \cdot 2}$

Step 5.2.6

Multiply $2$ by $1$ .

$\frac{1}{2}$

Step 6

The result can be shown in multiple forms.

Exact Form:

$\frac{1}{2}$

Decimal Form:

$0.5$