Calculus Examples

Evaluate the Limit limit as x approaches -4 of (1/4+1/x)/(4+x)
Step 1
Combine terms.
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Step 1.1
To write as a fraction with a common denominator, multiply by .
Step 1.2
To write as a fraction with a common denominator, multiply by .
Step 1.3
Write each expression with a common denominator of , by multiplying each by an appropriate factor of .
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Step 1.3.1
Multiply by .
Step 1.3.2
Multiply by .
Step 1.3.3
Reorder the factors of .
Step 1.4
Combine the numerators over the common denominator.
Step 2
Evaluate the limit.
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Step 2.1
Simplify the limit argument.
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Step 2.1.1
Multiply the numerator by the reciprocal of the denominator.
Step 2.1.2
Multiply by .
Step 2.1.3
Cancel the common factor of and .
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Step 2.1.3.1
Reorder terms.
Step 2.1.3.2
Cancel the common factor.
Step 2.1.3.3
Rewrite the expression.
Step 2.2
Move the term outside of the limit because it is constant with respect to .
Step 2.3
Split the limit using the Limits Quotient Rule on the limit as approaches .
Step 2.4
Evaluate the limit of which is constant as approaches .
Step 3
Evaluate the limit of by plugging in for .
Step 4
Simplify the answer.
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Step 4.1
Move the negative in front of the fraction.
Step 4.2
Multiply .
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Step 4.2.1
Multiply by .
Step 4.2.2
Multiply by .
Step 5
The result can be shown in multiple forms.
Exact Form:
Decimal Form: