Calculus Examples

Evaluate the Limit limit as x approaches infinity of (1-x^2)/(x^3-x+1)
Step 1
Divide the numerator and denominator by the highest power of in the denominator, which is .
Step 2
Evaluate the limit.
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Step 2.1
Cancel the common factor of and .
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Step 2.1.1
Multiply by .
Step 2.1.2
Cancel the common factors.
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Step 2.1.2.1
Factor out of .
Step 2.1.2.2
Cancel the common factor.
Step 2.1.2.3
Rewrite the expression.
Step 2.2
Simplify each term.
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Step 2.2.1
Cancel the common factor of .
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Step 2.2.1.1
Cancel the common factor.
Step 2.2.1.2
Rewrite the expression.
Step 2.2.2
Cancel the common factor of and .
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Step 2.2.2.1
Raise to the power of .
Step 2.2.2.2
Factor out of .
Step 2.2.2.3
Cancel the common factors.
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Step 2.2.2.3.1
Factor out of .
Step 2.2.2.3.2
Cancel the common factor.
Step 2.2.2.3.3
Rewrite the expression.
Step 2.3
Split the limit using the Limits Quotient Rule on the limit as approaches .
Step 2.4
Split the limit using the Sum of Limits Rule on the limit as approaches .
Step 3
Since its numerator approaches a real number while its denominator is unbounded, the fraction approaches .
Step 4
Since its numerator approaches a real number while its denominator is unbounded, the fraction approaches .
Step 5
Evaluate the limit.
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Step 5.1
Split the limit using the Sum of Limits Rule on the limit as approaches .
Step 5.2
Evaluate the limit of which is constant as approaches .
Step 6
Since its numerator approaches a real number while its denominator is unbounded, the fraction approaches .
Step 7
Since its numerator approaches a real number while its denominator is unbounded, the fraction approaches .
Step 8
Simplify the answer.
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Step 8.1
Simplify the numerator.
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Step 8.1.1
Multiply by .
Step 8.1.2
Add and .
Step 8.2
Simplify the denominator.
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Step 8.2.1
Multiply by .
Step 8.2.2
Add and .
Step 8.2.3
Add and .
Step 8.3
Divide by .