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Derivatives and Extrema

For the function f(x)=(x)/(x^2+9)

a) Find f'(x) using the appropriate rule and simplify to one expression with positive exponents.

b) Find all values of x, using algebra, where f'(x)=0 (Write your answer with positive exponents)

*** I could really use some help on this one. Thanks :)

Solution Summary

A derivative and the extrema of a function are found. The solution is detailed and well presented. The response received a rating of "5/5" from the student who originally posted the question.