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Calculus Examples
, , ,
Step 1
To find the volume of the solid, first define the area of each slice then integrate across the range. The area of each slice is the area of a circle with radius and .
where and
Step 2
Step 2.1
Apply the product rule to .
Step 2.2
Multiply the exponents in .
Step 2.2.1
Apply the power rule and multiply exponents, .
Step 2.2.2
Move to the left of .
Step 2.3
Apply the product rule to .
Step 2.4
Raise to the power of .
Step 2.5
Multiply by .
Step 3
Split the single integral into multiple integrals.
Step 4
Step 4.1
Let . Find .
Step 4.1.1
Differentiate .
Step 4.1.2
Since is constant with respect to , the derivative of with respect to is .
Step 4.1.3
Differentiate using the Power Rule which states that is where .
Step 4.1.4
Multiply by .
Step 4.2
Substitute the lower limit in for in .
Step 4.3
Simplify.
Step 4.3.1
Raising to any positive power yields .
Step 4.3.2
Multiply by .
Step 4.4
Substitute the upper limit in for in .
Step 4.5
Simplify.
Step 4.5.1
One to any power is one.
Step 4.5.2
Multiply by .
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
Step 5.1
Combine and .
Step 5.2
Multiply by .
Step 5.3
Multiply by .
Step 6
Since is constant with respect to , move out of the integral.
Step 7
Integrate by parts using the formula , where and .
Step 8
Step 8.1
Multiply by .
Step 8.2
Multiply by .
Step 8.3
Cancel the common factor of and .
Step 8.3.1
Factor out of .
Step 8.3.2
Cancel the common factors.
Step 8.3.2.1
Factor out of .
Step 8.3.2.2
Cancel the common factor.
Step 8.3.2.3
Rewrite the expression.
Step 8.4
Combine and .
Step 8.5
Combine and .
Step 8.6
Multiply by .
Step 8.7
Multiply by .
Step 8.8
Cancel the common factor of and .
Step 8.8.1
Factor out of .
Step 8.8.2
Cancel the common factors.
Step 8.8.2.1
Factor out of .
Step 8.8.2.2
Cancel the common factor.
Step 8.8.2.3
Rewrite the expression.
Step 8.9
Combine and .
Step 8.10
Combine and .
Step 9
Since is constant with respect to , move out of the integral.
Step 10
The integral of with respect to is .
Step 11
Combine and .
Step 12
Since is constant with respect to , move out of the integral.
Step 13
By the Power Rule, the integral of with respect to is .
Step 14
Combine and .
Step 15
Step 15.1
Evaluate at and at .
Step 15.2
Evaluate at and at .
Step 15.3
Evaluate at and at .
Step 15.4
Simplify.
Step 15.4.1
Anything raised to is .
Step 15.4.2
Multiply by .
Step 15.4.3
Anything raised to is .
Step 15.4.4
Multiply by .
Step 15.4.5
Combine the numerators over the common denominator.
Step 15.4.6
One to any power is one.
Step 15.4.7
Raising to any positive power yields .
Step 15.4.8
Cancel the common factor of and .
Step 15.4.8.1
Factor out of .
Step 15.4.8.2
Cancel the common factors.
Step 15.4.8.2.1
Factor out of .
Step 15.4.8.2.2
Cancel the common factor.
Step 15.4.8.2.3
Rewrite the expression.
Step 15.4.8.2.4
Divide by .
Step 15.4.9
Multiply by .
Step 15.4.10
Add and .
Step 15.4.11
Combine and .
Step 15.4.12
Move the negative in front of the fraction.
Step 15.4.13
To write as a fraction with a common denominator, multiply by .
Step 15.4.14
Combine and .
Step 15.4.15
Combine the numerators over the common denominator.
Step 15.4.16
Combine and .
Step 15.4.17
Combine and .
Step 16
Step 16.1
Replace all occurrences of with .
Step 16.2
Replace all occurrences of with .
Step 17
Step 17.1
Apply the distributive property.
Step 17.2
Multiply by .
Step 17.3
Combine the numerators over the common denominator.
Step 17.4
Simplify each term.
Step 17.4.1
Multiply by .
Step 17.4.2
Apply the product rule to .
Step 17.4.3
Rewrite as .
Step 17.4.4
Apply the power rule and multiply exponents, .
Step 17.4.5
Cancel the common factor of .
Step 17.4.5.1
Cancel the common factor.
Step 17.4.5.2
Rewrite the expression.
Step 17.4.6
Raise to the power of .
Step 17.4.7
Multiply the exponents in .
Step 17.4.7.1
Apply the power rule and multiply exponents, .
Step 17.4.7.2
Cancel the common factor of .
Step 17.4.7.2.1
Cancel the common factor.
Step 17.4.7.2.2
Rewrite the expression.
Step 17.4.8
Move to the left of .
Step 17.4.9
Multiply by .
Step 17.4.10
Apply the product rule to .
Step 17.4.11
Rewrite as .
Step 17.4.12
Apply the power rule and multiply exponents, .
Step 17.4.13
Cancel the common factor of .
Step 17.4.13.1
Cancel the common factor.
Step 17.4.13.2
Rewrite the expression.
Step 17.4.14
Raise to the power of .
Step 17.4.15
Multiply the exponents in .
Step 17.4.15.1
Apply the power rule and multiply exponents, .
Step 17.4.15.2
Cancel the common factor of .
Step 17.4.15.2.1
Cancel the common factor.
Step 17.4.15.2.2
Rewrite the expression.
Step 17.4.16
Apply the distributive property.
Step 17.4.17
Multiply by .
Step 17.4.18
Multiply by .
Step 17.4.19
Multiply by .
Step 17.4.20
Apply the product rule to .
Step 17.4.21
Rewrite as .
Step 17.4.22
Apply the power rule and multiply exponents, .
Step 17.4.23
Cancel the common factor of .
Step 17.4.23.1
Cancel the common factor.
Step 17.4.23.2
Rewrite the expression.
Step 17.4.24
Raise to the power of .
Step 17.4.25
Multiply the exponents in .
Step 17.4.25.1
Apply the power rule and multiply exponents, .
Step 17.4.25.2
Cancel the common factor of .
Step 17.4.25.2.1
Cancel the common factor.
Step 17.4.25.2.2
Rewrite the expression.
Step 17.4.26
Multiply by .
Step 17.5
Combine the opposite terms in .
Step 17.5.1
Subtract from .
Step 17.5.2
Subtract from .
Step 17.5.3
Add and .
Step 17.6
Cancel the common factor of .
Step 17.6.1
Cancel the common factor.
Step 17.6.2
Rewrite the expression.
Step 17.7
Multiply by .
Step 17.8
Subtract from .
Step 17.9
Move to the left of .
Step 17.10
Move the negative in front of the fraction.
Step 18
The result can be shown in multiple forms.
Exact Form:
Decimal Form:
Step 19