Calculus Examples

Evaluate the Limit ( limit as x approaches 1 of x^2+7x-8)/(x^2-1)
Step 1
Split the limit using the Sum of Limits Rule on the limit as approaches .
Step 2
Move the exponent from outside the limit using the Limits Power Rule.
Step 3
Move the term outside of the limit because it is constant with respect to .
Step 4
Evaluate the limit of which is constant as approaches .
Step 5
Evaluate the limits by plugging in for all occurrences of .
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Step 5.1
Evaluate the limit of by plugging in for .
Step 5.2
Evaluate the limit of by plugging in for .
Step 6
Simplify the answer.
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Step 6.1
Simplify the numerator.
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Step 6.1.1
One to any power is one.
Step 6.1.2
Multiply by .
Step 6.1.3
Multiply by .
Step 6.1.4
Add and .
Step 6.1.5
Subtract from .
Step 6.2
Simplify the denominator.
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Step 6.2.1
Rewrite as .
Step 6.2.2
Since both terms are perfect squares, factor using the difference of squares formula, where and .
Step 6.3
Divide by .