Calculus Examples

Find the Second Derivative x^2 natural log of 3x
Step 1
Find the first derivative.
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Step 1.1
Differentiate using the Product Rule which states that is where and .
Step 1.2
Differentiate using the chain rule, which states that is where and .
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Step 1.2.1
To apply the Chain Rule, set as .
Step 1.2.2
The derivative of with respect to is .
Step 1.2.3
Replace all occurrences of with .
Step 1.3
Differentiate.
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Step 1.3.1
Combine and .
Step 1.3.2
Cancel the common factor of and .
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Step 1.3.2.1
Factor out of .
Step 1.3.2.2
Cancel the common factors.
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Step 1.3.2.2.1
Factor out of .
Step 1.3.2.2.2
Cancel the common factor.
Step 1.3.2.2.3
Rewrite the expression.
Step 1.3.3
Since is constant with respect to , the derivative of with respect to is .
Step 1.3.4
Simplify terms.
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Step 1.3.4.1
Combine and .
Step 1.3.4.2
Cancel the common factor of .
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Step 1.3.4.2.1
Cancel the common factor.
Step 1.3.4.2.2
Divide by .
Step 1.3.5
Differentiate using the Power Rule which states that is where .
Step 1.3.6
Multiply by .
Step 1.3.7
Differentiate using the Power Rule which states that is where .
Step 1.3.8
Reorder terms.
Step 2
Find the second derivative.
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Step 2.1
By the Sum Rule, the derivative of with respect to is .
Step 2.2
Evaluate .
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Step 2.2.1
Since is constant with respect to , the derivative of with respect to is .
Step 2.2.2
Differentiate using the Product Rule which states that is where and .
Step 2.2.3
Differentiate using the chain rule, which states that is where and .
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Step 2.2.3.1
To apply the Chain Rule, set as .
Step 2.2.3.2
The derivative of with respect to is .
Step 2.2.3.3
Replace all occurrences of with .
Step 2.2.4
Since is constant with respect to , the derivative of with respect to is .
Step 2.2.5
Differentiate using the Power Rule which states that is where .
Step 2.2.6
Differentiate using the Power Rule which states that is where .
Step 2.2.7
Multiply by .
Step 2.2.8
Combine and .
Step 2.2.9
Cancel the common factor of .
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Step 2.2.9.1
Cancel the common factor.
Step 2.2.9.2
Rewrite the expression.
Step 2.2.10
Combine and .
Step 2.2.11
Cancel the common factor of .
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Step 2.2.11.1
Cancel the common factor.
Step 2.2.11.2
Rewrite the expression.
Step 2.2.12
Multiply by .
Step 2.3
Differentiate using the Power Rule which states that is where .
Step 2.4
Simplify.
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Step 2.4.1
Apply the distributive property.
Step 2.4.2
Combine terms.
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Step 2.4.2.1
Multiply by .
Step 2.4.2.2
Add and .