AP Calculus AB : Understanding the derivative of a sum, product, or quotient
Study concepts, example questions & explanations for AP Calculus AB
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Example Questions
Example Question #1 : Understanding Derivatives Of Sums, Quotients, And Products
Find the derivative of the following function:
Since this function is a polynomial, we take the derivative of each term separately.
From the power rule, the derivative of
is simply
We can rewrite 
and using the power rule again, we get a derivative of
So the answer is
Example Question #2 : Understanding Derivatives Of Sums, Quotients, And Products
What is
The chain rule is "first times the derivative of the second plus second times derivative of the first".
In this case, that means 
Example Question #3 : Understanding Derivatives Of Sums, Quotients, And Products
Which of the following best represents 
The question is just asking for the Quotient Rule formula.
Recall the Quotient Rule is the bottom function times the derivative of the top minus the top function times the derivative of the bottom all divided by the bottom function squared.
Given,
the bottom function is 
Substituting these into the Quotient Rule formula resulting in the following.
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