Calculus Examples

$lim_{x \to 8} \frac{3 x^{3} - 5 x^{5} + 7 x - 1}{5 x^{11} + 3 x^{7} - 2 x^{4} + 5}$

Step 1

Split the limit using the Limits Quotient Rule on the limit as $x$ approaches $8$ .

$\frac{lim_{x \to 8} 3 x^{3} - 5 x^{5} + 7 x - 1}{lim_{x \to 8} 5 x^{11} + 3 x^{7} - 2 x^{4} + 5}$

Step 2

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

$\frac{lim_{x \to 8} 3 x^{3} - lim_{x \to 8} 5 x^{5} + lim_{x \to 8} 7 x - lim_{x \to 8} 1}{lim_{x \to 8} 5 x^{11} + 3 x^{7} - 2 x^{4} + 5}$

Step 3

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

$\frac{3 lim_{x \to 8} x^{3} - lim_{x \to 8} 5 x^{5} + lim_{x \to 8} 7 x - lim_{x \to 8} 1}{lim_{x \to 8} 5 x^{11} + 3 x^{7} - 2 x^{4} + 5}$

Step 4

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

$\frac{3 {(lim_{x \to 8} x)}^{3} - lim_{x \to 8} 5 x^{5} + lim_{x \to 8} 7 x - lim_{x \to 8} 1}{lim_{x \to 8} 5 x^{11} + 3 x^{7} - 2 x^{4} + 5}$

Step 5

Move the term $5$ outside of the limit because it is constant with respect to $x$ .

$\frac{3 {(lim_{x \to 8} x)}^{3} - 5 lim_{x \to 8} x^{5} + lim_{x \to 8} 7 x - lim_{x \to 8} 1}{lim_{x \to 8} 5 x^{11} + 3 x^{7} - 2 x^{4} + 5}$

Step 6

Move the exponent $5$ from $x^{5}$ outside the limit using the Limits Power Rule.

$\frac{3 {(lim_{x \to 8} x)}^{3} - 5 {(lim_{x \to 8} x)}^{5} + lim_{x \to 8} 7 x - lim_{x \to 8} 1}{lim_{x \to 8} 5 x^{11} + 3 x^{7} - 2 x^{4} + 5}$

Step 7

Move the term $7$ outside of the limit because it is constant with respect to $x$ .

$\frac{3 {(lim_{x \to 8} x)}^{3} - 5 {(lim_{x \to 8} x)}^{5} + 7 lim_{x \to 8} x - lim_{x \to 8} 1}{lim_{x \to 8} 5 x^{11} + 3 x^{7} - 2 x^{4} + 5}$

Step 8

Evaluate the limit of $1$ which is constant as $x$ approaches $8$ .

$\frac{3 {(lim_{x \to 8} x)}^{3} - 5 {(lim_{x \to 8} x)}^{5} + 7 lim_{x \to 8} x - 1 \cdot 1}{lim_{x \to 8} 5 x^{11} + 3 x^{7} - 2 x^{4} + 5}$

Step 9

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

$\frac{3 {(lim_{x \to 8} x)}^{3} - 5 {(lim_{x \to 8} x)}^{5} + 7 lim_{x \to 8} x - 1 \cdot 1}{lim_{x \to 8} 5 x^{11} + lim_{x \to 8} 3 x^{7} - lim_{x \to 8} 2 x^{4} + lim_{x \to 8} 5}$

Step 10

Move the term $5$ outside of the limit because it is constant with respect to $x$ .

$\frac{3 {(lim_{x \to 8} x)}^{3} - 5 {(lim_{x \to 8} x)}^{5} + 7 lim_{x \to 8} x - 1 \cdot 1}{5 lim_{x \to 8} x^{11} + lim_{x \to 8} 3 x^{7} - lim_{x \to 8} 2 x^{4} + lim_{x \to 8} 5}$

Step 11

Move the exponent $11$ from $x^{11}$ outside the limit using the Limits Power Rule.

$\frac{3 {(lim_{x \to 8} x)}^{3} - 5 {(lim_{x \to 8} x)}^{5} + 7 lim_{x \to 8} x - 1 \cdot 1}{5 {(lim_{x \to 8} x)}^{11} + lim_{x \to 8} 3 x^{7} - lim_{x \to 8} 2 x^{4} + lim_{x \to 8} 5}$

Step 12

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

$\frac{3 {(lim_{x \to 8} x)}^{3} - 5 {(lim_{x \to 8} x)}^{5} + 7 lim_{x \to 8} x - 1 \cdot 1}{5 {(lim_{x \to 8} x)}^{11} + 3 lim_{x \to 8} x^{7} - lim_{x \to 8} 2 x^{4} + lim_{x \to 8} 5}$

Step 13

Move the exponent $7$ from $x^{7}$ outside the limit using the Limits Power Rule.

$\frac{3 {(lim_{x \to 8} x)}^{3} - 5 {(lim_{x \to 8} x)}^{5} + 7 lim_{x \to 8} x - 1 \cdot 1}{5 {(lim_{x \to 8} x)}^{11} + 3 {(lim_{x \to 8} x)}^{7} - lim_{x \to 8} 2 x^{4} + lim_{x \to 8} 5}$

Step 14

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

$\frac{3 {(lim_{x \to 8} x)}^{3} - 5 {(lim_{x \to 8} x)}^{5} + 7 lim_{x \to 8} x - 1 \cdot 1}{5 {(lim_{x \to 8} x)}^{11} + 3 {(lim_{x \to 8} x)}^{7} - 2 lim_{x \to 8} x^{4} + lim_{x \to 8} 5}$

Step 15

Move the exponent $4$ from $x^{4}$ outside the limit using the Limits Power Rule.

$\frac{3 {(lim_{x \to 8} x)}^{3} - 5 {(lim_{x \to 8} x)}^{5} + 7 lim_{x \to 8} x - 1 \cdot 1}{5 {(lim_{x \to 8} x)}^{11} + 3 {(lim_{x \to 8} x)}^{7} - 2 {(lim_{x \to 8} x)}^{4} + lim_{x \to 8} 5}$

Step 16

Evaluate the limit of $5$ which is constant as $x$ approaches $8$ .

$\frac{3 {(lim_{x \to 8} x)}^{3} - 5 {(lim_{x \to 8} x)}^{5} + 7 lim_{x \to 8} x - 1 \cdot 1}{5 {(lim_{x \to 8} x)}^{11} + 3 {(lim_{x \to 8} x)}^{7} - 2 {(lim_{x \to 8} x)}^{4} + 5}$

Step 17

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

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Step 17.1