Calculus Examples

Find the 2nd Derivative f(x) = square root of x^2+27
Step 1
Find the first derivative.
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Step 1.1
Use to rewrite as .
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
Differentiate using the Power Rule which states that is where .
Step 1.2.3
Replace all occurrences of with .
Step 1.3
To write as a fraction with a common denominator, multiply by .
Step 1.4
Combine and .
Step 1.5
Combine the numerators over the common denominator.
Step 1.6
Simplify the numerator.
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Step 1.6.1
Multiply by .
Step 1.6.2
Subtract from .
Step 1.7
Combine fractions.
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Step 1.7.1
Move the negative in front of the fraction.
Step 1.7.2
Combine and .
Step 1.7.3
Move to the denominator using the negative exponent rule .
Step 1.8
By the Sum Rule, the derivative of with respect to is .
Step 1.9
Differentiate using the Power Rule which states that is where .
Step 1.10
Since is constant with respect to , the derivative of with respect to is .
Step 1.11
Simplify terms.
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Step 1.11.1
Add and .
Step 1.11.2
Combine and .
Step 1.11.3
Combine and .
Step 1.11.4
Cancel the common factor.
Step 1.11.5
Rewrite the expression.
Step 2
Find the second derivative.
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Step 2.1
Differentiate using the Quotient Rule which states that is where and .
Step 2.2
Multiply the exponents in .
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Step 2.2.1
Apply the power rule and multiply exponents, .
Step 2.2.2
Cancel the common factor of .
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Step 2.2.2.1
Cancel the common factor.
Step 2.2.2.2
Rewrite the expression.
Step 2.3
Simplify.
Step 2.4
Differentiate using the Power Rule.
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Step 2.4.1
Differentiate using the Power Rule which states that is where .
Step 2.4.2
Multiply by .
Step 2.5
Differentiate using the chain rule, which states that is where and .
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Step 2.5.1
To apply the Chain Rule, set as .
Step 2.5.2
Differentiate using the Power Rule which states that is where .
Step 2.5.3
Replace all occurrences of with .
Step 2.6
To write as a fraction with a common denominator, multiply by .
Step 2.7
Combine and .
Step 2.8
Combine the numerators over the common denominator.
Step 2.9
Simplify the numerator.
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Step 2.9.1
Multiply by .
Step 2.9.2
Subtract from .
Step 2.10
Combine fractions.
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Step 2.10.1
Move the negative in front of the fraction.
Step 2.10.2
Combine and .
Step 2.10.3
Move to the denominator using the negative exponent rule .
Step 2.10.4
Combine and .
Step 2.11
By the Sum Rule, the derivative of with respect to is .
Step 2.12
Differentiate using the Power Rule which states that is where .
Step 2.13
Since is constant with respect to , the derivative of with respect to is .
Step 2.14
Combine fractions.
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Step 2.14.1
Add and .
Step 2.14.2
Multiply by .
Step 2.14.3
Combine and .
Step 2.14.4
Combine and .
Step 2.15
Raise to the power of .
Step 2.16
Raise to the power of .
Step 2.17
Use the power rule to combine exponents.
Step 2.18
Add and .
Step 2.19
Factor out of .
Step 2.20
Cancel the common factors.
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Step 2.20.1
Factor out of .
Step 2.20.2
Cancel the common factor.
Step 2.20.3
Rewrite the expression.
Step 2.21
Move the negative in front of the fraction.
Step 2.22
To write as a fraction with a common denominator, multiply by .
Step 2.23
Combine the numerators over the common denominator.
Step 2.24
Multiply by by adding the exponents.
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Step 2.24.1
Use the power rule to combine exponents.
Step 2.24.2
Combine the numerators over the common denominator.
Step 2.24.3
Add and .
Step 2.24.4
Divide by .
Step 2.25
Simplify .
Step 2.26
Subtract from .
Step 2.27
Add and .
Step 2.28
Rewrite as a product.
Step 2.29
Multiply by .
Step 2.30
Multiply by by adding the exponents.
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Step 2.30.1
Multiply by .
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Step 2.30.1.1
Raise to the power of .
Step 2.30.1.2
Use the power rule to combine exponents.
Step 2.30.2
Write as a fraction with a common denominator.
Step 2.30.3
Combine the numerators over the common denominator.
Step 2.30.4
Add and .
Step 3
Find the third derivative.
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Step 3.1
Differentiate using the Constant Multiple Rule.
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Step 3.1.1
Since is constant with respect to , the derivative of with respect to is .
Step 3.1.2
Apply basic rules of exponents.
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Step 3.1.2.1
Rewrite as .
Step 3.1.2.2
Multiply the exponents in .
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Step 3.1.2.2.1
Apply the power rule and multiply exponents, .
Step 3.1.2.2.2
Multiply .
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Step 3.1.2.2.2.1
Combine and .
Step 3.1.2.2.2.2
Multiply by .
Step 3.1.2.2.3
Move the negative in front of the fraction.
Step 3.2
Differentiate using the chain rule, which states that is where and .
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Step 3.2.1
To apply the Chain Rule, set as .
Step 3.2.2
Differentiate using the Power Rule which states that is where .
Step 3.2.3
Replace all occurrences of with .
Step 3.3
To write as a fraction with a common denominator, multiply by .
Step 3.4
Combine and .
Step 3.5
Combine the numerators over the common denominator.
Step 3.6
Simplify the numerator.
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Step 3.6.1
Multiply by .
Step 3.6.2
Subtract from .
Step 3.7
Combine fractions.
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Step 3.7.1
Move the negative in front of the fraction.
Step 3.7.2
Combine and .
Step 3.7.3
Simplify the expression.
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Step 3.7.3.1
Move to the left of .
Step 3.7.3.2
Move to the denominator using the negative exponent rule .
Step 3.7.3.3
Multiply by .
Step 3.7.4
Combine and .
Step 3.7.5
Simplify the expression.
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Step 3.7.5.1
Multiply by .
Step 3.7.5.2
Move the negative in front of the fraction.
Step 3.8
By the Sum Rule, the derivative of with respect to is .
Step 3.9
Differentiate using the Power Rule which states that is where .
Step 3.10
Since is constant with respect to , the derivative of with respect to is .
Step 3.11
Simplify terms.
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Step 3.11.1
Add and .
Step 3.11.2
Multiply by .
Step 3.11.3
Combine and .
Step 3.11.4
Multiply by .
Step 3.11.5
Combine and .
Step 3.11.6
Factor out of .
Step 3.12
Cancel the common factors.
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Step 3.12.1
Factor out of .
Step 3.12.2
Cancel the common factor.
Step 3.12.3
Rewrite the expression.
Step 3.13
Move the negative in front of the fraction.
Step 4
Find the fourth derivative.
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Step 4.1
Since is constant with respect to , the derivative of with respect to is .
Step 4.2
Differentiate using the Quotient Rule which states that is where and .
Step 4.3
Differentiate using the Power Rule.
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Step 4.3.1
Multiply the exponents in .
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Step 4.3.1.1
Apply the power rule and multiply exponents, .
Step 4.3.1.2
Cancel the common factor of .
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Step 4.3.1.2.1
Cancel the common factor.
Step 4.3.1.2.2
Rewrite the expression.
Step 4.3.2
Differentiate using the Power Rule which states that is where .
Step 4.3.3
Multiply by .
Step 4.4
Differentiate using the chain rule, which states that is where and .
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Step 4.4.1
To apply the Chain Rule, set as .
Step 4.4.2
Differentiate using the Power Rule which states that is where .
Step 4.4.3
Replace all occurrences of with .
Step 4.5
To write as a fraction with a common denominator, multiply by .
Step 4.6
Combine and .
Step 4.7
Combine the numerators over the common denominator.
Step 4.8
Simplify the numerator.
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Step 4.8.1
Multiply by .
Step 4.8.2
Subtract from .
Step 4.9
Combine fractions.
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Step 4.9.1
Combine and .
Step 4.9.2
Combine and .
Step 4.10
By the Sum Rule, the derivative of with respect to is .
Step 4.11
Differentiate using the Power Rule which states that is where .
Step 4.12
Since is constant with respect to , the derivative of with respect to is .
Step 4.13
Combine fractions.
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Step 4.13.1
Add and .
Step 4.13.2
Multiply by .
Step 4.13.3
Combine and .
Step 4.13.4
Multiply by .
Step 4.13.5
Combine and .
Step 4.14
Raise to the power of .
Step 4.15
Raise to the power of .
Step 4.16
Use the power rule to combine exponents.
Step 4.17
Add and .
Step 4.18
Factor out of .
Step 4.19
Cancel the common factors.
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Step 4.19.1
Factor out of .
Step 4.19.2
Cancel the common factor.
Step 4.19.3
Rewrite the expression.
Step 4.19.4
Divide by .
Step 4.20
Factor out of .
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Step 4.20.1
Move .
Step 4.20.2
Factor out of .
Step 4.20.3
Factor out of .
Step 4.20.4
Factor out of .
Step 4.21
Cancel the common factor of .
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Step 4.21.1
Cancel the common factor.
Step 4.21.2
Rewrite the expression.
Step 4.22
Simplify.
Step 4.23
Subtract from .
Step 4.24
Move to the denominator using the negative exponent rule .
Step 4.25
Multiply by by adding the exponents.
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Step 4.25.1
Use the power rule to combine exponents.
Step 4.25.2
To write as a fraction with a common denominator, multiply by .
Step 4.25.3
Combine and .
Step 4.25.4
Combine the numerators over the common denominator.
Step 4.25.5
Simplify the numerator.
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Step 4.25.5.1
Multiply by .
Step 4.25.5.2
Subtract from .
Step 4.26
Combine and .
Step 4.27
Move the negative in front of the fraction.
Step 4.28
Simplify.
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Step 4.28.1
Apply the distributive property.
Step 4.28.2
Simplify each term.
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Step 4.28.2.1
Multiply by .
Step 4.28.2.2
Multiply by .
Step 4.28.3
Factor out of .
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Step 4.28.3.1
Factor out of .
Step 4.28.3.2
Factor out of .
Step 4.28.3.3
Factor out of .
Step 4.28.4
Factor out of .
Step 4.28.5
Rewrite as .
Step 4.28.6
Factor out of .
Step 4.28.7
Rewrite as .
Step 4.28.8
Move the negative in front of the fraction.
Step 4.28.9
Multiply by .
Step 4.28.10
Multiply by .
Step 5
The fourth derivative of with respect to is .