Calculus Examples

Evaluate the Limit limit as x approaches 1 of (x^(3a)-3ax+3a-1)/((x-1)^2)
Step 1
Apply L'Hospital's rule.
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Step 1.1
Evaluate the limit of the numerator and the limit of the denominator.
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Step 1.1.1
Take the limit of the numerator and the limit of the denominator.
Step 1.1.2
Evaluate the limit of the numerator.
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Step 1.1.2.1
Split the limit using the Sum of Limits Rule on the limit as approaches .
Step 1.1.2.2
Move the exponent from outside the limit using the Limits Power Rule.
Step 1.1.2.3
Move the term outside of the limit because it is constant with respect to .
Step 1.1.2.4
Evaluate the limit of which is constant as approaches .
Step 1.1.2.5
Evaluate the limit of which is constant as approaches .
Step 1.1.2.6
Evaluate the limits by plugging in for all occurrences of .
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Step 1.1.2.6.1
Evaluate the limit of by plugging in for .
Step 1.1.2.6.2
Evaluate the limit of by plugging in for .
Step 1.1.2.7
Simplify the answer.
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Step 1.1.2.7.1
Simplify each term.
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Step 1.1.2.7.1.1
One to any power is one.
Step 1.1.2.7.1.2
Multiply by .
Step 1.1.2.7.1.3
Multiply by .
Step 1.1.2.7.1.4
Multiply by .
Step 1.1.2.7.2
Combine the opposite terms in .
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Step 1.1.2.7.2.1
Add and .
Step 1.1.2.7.2.2
Add and .
Step 1.1.2.7.2.3
Subtract from .
Step 1.1.3
Evaluate the limit of the denominator.
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Step 1.1.3.1
Evaluate the limit.
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Step 1.1.3.1.1
Move the exponent from outside the limit using the Limits Power Rule.
Step 1.1.3.1.2
Split the limit using the Sum of Limits Rule on the limit as approaches .
Step 1.1.3.1.3
Evaluate the limit of which is constant as approaches .
Step 1.1.3.2
Evaluate the limit of by plugging in for .
Step 1.1.3.3
Simplify the answer.
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Step 1.1.3.3.1
Multiply by .
Step 1.1.3.3.2
Subtract from .
Step 1.1.3.3.3
Raising to any positive power yields .
Step 1.1.3.3.4
The expression contains a division by . The expression is undefined.
Undefined
Step 1.1.3.4
The expression contains a division by . The expression is undefined.
Undefined
Step 1.1.4
The expression contains a division by . The expression is undefined.
Undefined
Step 1.2
Since is of indeterminate form, apply L'Hospital's Rule. L'Hospital's Rule states that the limit of a quotient of functions is equal to the limit of the quotient of their derivatives.
Step 1.3
Find the derivative of the numerator and denominator.
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Step 1.3.1
Differentiate the numerator and denominator.
Step 1.3.2
By the Sum Rule, the derivative of with respect to is .
Step 1.3.3
Differentiate using the Power Rule which states that is where .
Step 1.3.4
Evaluate .
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Step 1.3.4.1
Since is constant with respect to , the derivative of with respect to is .
Step 1.3.4.2
Differentiate using the Power Rule which states that is where .
Step 1.3.4.3
Multiply by .
Step 1.3.5
Since is constant with respect to , the derivative of with respect to is .
Step 1.3.6
Since is constant with respect to , the derivative of with respect to is .
Step 1.3.7
Simplify.
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Step 1.3.7.1
Combine terms.
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Step 1.3.7.1.1
Add and .
Step 1.3.7.1.2
Add and .
Step 1.3.7.2
Reorder terms.
Step 1.3.7.3
Reorder factors in .
Step 1.3.8
Rewrite as .
Step 1.3.9
Expand using the FOIL Method.
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Step 1.3.9.1
Apply the distributive property.
Step 1.3.9.2
Apply the distributive property.
Step 1.3.9.3
Apply the distributive property.
Step 1.3.10
Simplify and combine like terms.
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Step 1.3.10.1
Simplify each term.
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Step 1.3.10.1.1
Multiply by .
Step 1.3.10.1.2
Move to the left of .
Step 1.3.10.1.3
Rewrite as .
Step 1.3.10.1.4
Rewrite as .
Step 1.3.10.1.5
Multiply by .
Step 1.3.10.2
Subtract from .
Step 1.3.11
By the Sum Rule, the derivative of with respect to is .
Step 1.3.12
Differentiate using the Power Rule which states that is where .
Step 1.3.13
Since is constant with respect to , the derivative of with respect to is .
Step 1.3.14
Differentiate using the Power Rule which states that is where .
Step 1.3.15
Multiply by .
Step 1.3.16
Since is constant with respect to , the derivative of with respect to is .
Step 1.3.17
Add and .
Step 2
Apply L'Hospital's rule.
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Step 2.1
Evaluate the limit of the numerator and the limit of the denominator.
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Step 2.1.1
Take the limit of the numerator and the limit of the denominator.
Step 2.1.2
Evaluate the limit of the numerator.
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Step 2.1.2.1
Evaluate the limit.
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Step 2.1.2.1.1
Split the limit using the Sum of Limits Rule on the limit as approaches .
Step 2.1.2.1.2
Evaluate the limit of which is constant as approaches .
Step 2.1.2.1.3
Move the term outside of the limit because it is constant with respect to .
Step 2.1.2.1.4
Move the exponent from outside the limit using the Limits Power Rule.
Step 2.1.2.2
Evaluate the limit of by plugging in for .
Step 2.1.2.3
Simplify the answer.
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Step 2.1.2.3.1
Simplify each term.
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Step 2.1.2.3.1.1
One to any power is one.
Step 2.1.2.3.1.2
Multiply by .
Step 2.1.2.3.2
Add and .
Step 2.1.3
Evaluate the limit of the denominator.
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Step 2.1.3.1
Evaluate the limit.
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Step 2.1.3.1.1
Split the limit using the Sum of Limits Rule on the limit as approaches .
Step 2.1.3.1.2
Move the term outside of the limit because it is constant with respect to .
Step 2.1.3.1.3
Evaluate the limit of which is constant as approaches .
Step 2.1.3.2
Evaluate the limit of by plugging in for .
Step 2.1.3.3
Simplify the answer.
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Step 2.1.3.3.1
Simplify each term.
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Step 2.1.3.3.1.1
Multiply by .
Step 2.1.3.3.1.2
Multiply by .
Step 2.1.3.3.2
Subtract from .
Step 2.1.3.3.3
The expression contains a division by . The expression is undefined.
Undefined
Step 2.1.3.4
The expression contains a division by . The expression is undefined.
Undefined
Step 2.1.4
The expression contains a division by . The expression is undefined.
Undefined
Step 2.2
Since is of indeterminate form, apply L'Hospital's Rule. L'Hospital's Rule states that the limit of a quotient of functions is equal to the limit of the quotient of their derivatives.
Step 2.3
Find the derivative of the numerator and denominator.
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Step 2.3.1
Differentiate the numerator and denominator.
Step 2.3.2
By the Sum Rule, the derivative of with respect to is .
Step 2.3.3
Since is constant with respect to , the derivative of with respect to is .
Step 2.3.4
Evaluate .
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Step 2.3.4.1
Since is constant with respect to , the derivative of with respect to is .
Step 2.3.4.2
Differentiate using the Power Rule which states that is where .
Step 2.3.4.3
Subtract from .
Step 2.3.5
Simplify.
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Step 2.3.5.1
Add and .
Step 2.3.5.2
Reorder the factors of .
Step 2.3.6
By the Sum Rule, the derivative of with respect to is .
Step 2.3.7
Evaluate .
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Step 2.3.7.1
Since is constant with respect to , the derivative of with respect to is .
Step 2.3.7.2
Differentiate using the Power Rule which states that is where .
Step 2.3.7.3
Multiply by .
Step 2.3.8
Since is constant with respect to , the derivative of with respect to is .
Step 2.3.9
Add and .
Step 3
Evaluate the limit.
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Step 3.1
Move the term outside of the limit because it is constant with respect to .
Step 3.2
Move the exponent from outside the limit using the Limits Power Rule.
Step 4
Evaluate the limit of by plugging in for .
Step 5
Simplify the answer.
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Step 5.1
One to any power is one.
Step 5.2
Multiply by .