Calculus Examples

$\frac{lim_{h \to 8} 3 h + 2 x h^{2} + x^{2} h^{3}}{4 - 3 x h - 2 x^{3} h^{3}}$

Step 1

Split the limit using the Sum of Limits Rule on the limit as $h$ approaches $8$ .

$\frac{lim_{h \to 8} 3 h + lim_{h \to 8} 2 x h^{2} + lim_{h \to 8} x^{2} h^{3}}{4 - 3 x h - 2 x^{3} h^{3}}$

Step 2

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

$\frac{3 lim_{h \to 8} h + lim_{h \to 8} 2 x h^{2} + lim_{h \to 8} x^{2} h^{3}}{4 - 3 x h - 2 x^{3} h^{3}}$

Step 3

Move the term $2 x$ outside of the limit because it is constant with respect to $h$ .

$\frac{3 lim_{h \to 8} h + 2 x lim_{h \to 8} h^{2} + lim_{h \to 8} x^{2} h^{3}}{4 - 3 x h - 2 x^{3} h^{3}}$

Step 4

Move the exponent $2$ from $h^{2}$ outside the limit using the Limits Power Rule.

$\frac{3 lim_{h \to 8} h + 2 x {(lim_{h \to 8} h)}^{2} + lim_{h \to 8} x^{2} h^{3}}{4 - 3 x h - 2 x^{3} h^{3}}$

Step 5

Move the term $x^{2}$ outside of the limit because it is constant with respect to $h$ .

$\frac{3 lim_{h \to 8} h + 2 x {(lim_{h \to 8} h)}^{2} + x^{2} lim_{h \to 8} h^{3}}{4 - 3 x h - 2 x^{3} h^{3}}$

Step 6

Move the exponent $3$ from $h^{3}$ outside the limit using the Limits Power Rule.

$\frac{3 lim_{h \to 8} h + 2 x {(lim_{h \to 8} h)}^{2} + x^{2} {(lim_{h \to 8} h)}^{3}}{4 - 3 x h - 2 x^{3} h^{3}}$

Step 7

Evaluate the limits by plugging in $8$ for all occurrences of $h$ .

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Step 7.1

Evaluate the limit of $h$ by plugging in $8$ for $h$ .

$\frac{3 \cdot 8 + 2 x {(lim_{h \to 8} h)}^{2} + x^{2} {(lim_{h \to 8} h)}^{3}}{4 - 3 x h - 2 x^{3} h^{3}}$

Step 7.2

Evaluate the limit of $h$ by plugging in $8$ for $h$ .

$\frac{3 \cdot 8 + 2 x \cdot 8^{2} + x^{2} {(lim_{h \to 8} h)}^{3}}{4 - 3 x h - 2 x^{3} h^{3}}$

Step 7.3

Evaluate the limit of $h$ by plugging in $8$ for $h$ .

$\frac{3 \cdot 8 + 2 x \cdot 8^{2} + x^{2} \cdot 8^{3}}{4 - 3 x h - 2 x^{3} h^{3}}$

Step 8

Simplify the numerator.

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Step 8.1

Multiply $3$ by $8$ .

$\frac{24 + 2 x \cdot 8^{2} + x^{2} \cdot 8^{3}}{4 - 3 x h - 2 x^{3} h^{3}}$

Step 8.2

Raise $8$ to the power of $2$ .

$\frac{24 + 2 x \cdot 64 + x^{2} \cdot 8^{3}}{4 - 3 x h - 2 x^{3} h^{3}}$

Step 8.3

Multiply $64$ by $2$ .

$\frac{24 + 128 x + x^{2} \cdot 8^{3}}{4 - 3 x h - 2 x^{3} h^{3}}$

Step 8.4

Raise $8$ to the power of $3$ .

$\frac{24 + 128 x + x^{2} \cdot 512}{4 - 3 x h - 2 x^{3} h^{3}}$

Step 8.5

Move $512$ to the left of $x^{2}$ .

$\frac{24 + 128 x + 512 \cdot x^{2}}{4 - 3 x h - 2 x^{3} h^{3}}$

Step 8.6

Factor $8$ out of $24 + 128 x + 512 x^{2}$ .

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Step 8.6.1

Factor $8$ out of $24$ .

$\frac{8 (3) + 128 x + 512 x^{2}}{4 - 3 x h - 2 x^{3} h^{3}}$

Step 8.6.2

Factor $8$ out of $128 x$ .

$\frac{8 (3) + 8 (16 x) + 512 x^{2}}{4 - 3 x h - 2 x^{3} h^{3}}$

Step 8.6.3

Factor $8$ out of $512 x^{2}$ .

$\frac{8 (3) + 8 (16 x) + 8 (64 x^{2})}{4 - 3 x h - 2 x^{3} h^{3}}$

Step 8.6.4

Factor $8$ out of $8 (3) + 8 (16 x)$ .

$\frac{8 (3 + 16 x) + 8 (64 x^{2})}{4 - 3 x h - 2 x^{3} h^{3}}$

Step 8.6.5

Factor $8$ out of $8 (3 + 16 x) + 8 (64 x^{2})$ .

$\frac{8 (3 + 16 x + 64 x^{2})}{4 - 3 x h - 2 x^{3} h^{3}}$