Calculus Examples

Evaluate the Integral integral from 0 to fourth root of pi of x^3cos(x^4) with respect to x
Step 1
Let . Then , so . Rewrite using and .
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Step 1.1
Let . Find .
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Step 1.1.1
Differentiate .
Step 1.1.2
Differentiate using the Power Rule which states that is where .
Step 1.2
Substitute the lower limit in for in .
Step 1.3
Raising to any positive power yields .
Step 1.4
Substitute the upper limit in for in .
Step 1.5
Rewrite as .
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Step 1.5.1
Use to rewrite as .
Step 1.5.2
Apply the power rule and multiply exponents, .
Step 1.5.3
Combine and .
Step 1.5.4
Cancel the common factor of and .
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Step 1.5.4.1
Factor out of .
Step 1.5.4.2
Cancel the common factors.
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Step 1.5.4.2.1
Factor out of .
Step 1.5.4.2.2
Cancel the common factor.
Step 1.5.4.2.3
Rewrite the expression.
Step 1.5.5
Rewrite as .
Step 1.6
The values found for and will be used to evaluate the definite integral.
Step 1.7
Rewrite the problem using , , and the new limits of integration.
Step 2
Simplify.
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Step 2.1
Rewrite as .
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Step 2.1.1
Use to rewrite as .
Step 2.1.2
Apply the power rule and multiply exponents, .
Step 2.1.3
Combine and .
Step 2.1.4
Cancel the common factor of and .
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Step 2.1.4.1
Factor out of .
Step 2.1.4.2
Cancel the common factors.
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Step 2.1.4.2.1
Factor out of .
Step 2.1.4.2.2
Cancel the common factor.
Step 2.1.4.2.3
Rewrite the expression.
Step 2.1.4.2.4
Divide by .
Step 2.2
Combine and .
Step 2.3
Combine and .
Step 3
Since is constant with respect to , move out of the integral.
Step 4
Let . Then , so . Rewrite using and .
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Step 4.1
Let . Find .
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Step 4.1.1
Differentiate .
Step 4.1.2
Differentiate using the Power Rule which states that is where .
Step 4.2
Substitute the lower limit in for in .
Step 4.3
Raising to any positive power yields .
Step 4.4
Substitute the upper limit in for in .
Step 4.5
Rewrite as .
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Step 4.5.1
Use to rewrite as .
Step 4.5.2
Apply the power rule and multiply exponents, .
Step 4.5.3
Combine and .
Step 4.5.4
Cancel the common factor of .
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Step 4.5.4.1
Cancel the common factor.
Step 4.5.4.2
Rewrite the expression.
Step 4.5.5
Simplify.
Step 4.6
The values found for and will be used to evaluate the definite integral.
Step 4.7
Rewrite the problem using , , and the new limits of integration.
Step 5
Combine and .
Step 6
Since is constant with respect to , move out of the integral.
Step 7
Simplify.
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Step 7.1
Multiply by .
Step 7.2
Multiply by .
Step 8
The integral of with respect to is .
Step 9
Evaluate at and at .
Step 10
Simplify.
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Step 10.1
The exact value of is .
Step 10.2
Multiply by .
Step 10.3
Add and .
Step 10.4
Combine and .
Step 11
Simplify.
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Step 11.1
Simplify the numerator.
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Step 11.1.1
Apply the reference angle by finding the angle with equivalent trig values in the first quadrant.
Step 11.1.2
The exact value of is .
Step 11.2
Divide by .