Engineering Board Exam Reviewer · Derivatives of Exponential and Logarithmic Functions · medium

Differentiate y= (x2+1).

1. 2x/x2+1
2. 1/x2+1
3. 2x
4. x/x2+1

Answer

A. 2x/x2+1

Solution

By the chain rule: y'=2x/x2+1.

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