`f(x) = (4x)/(x^2 + 1)` Find the critical numbers of the function.

Textbook Question

Chapter 3, 3.1 - Problem 14 - Calculus of a Single Variable (10th Edition, Ron Larson).
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mathace | (Level 3) Assistant Educator

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GivenĀ `f(x)=(4x)/(x^2+1)`

Find the derivative using the Quotient Rule. The set the derivative equal to zero and solve for the critical x value(s).






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