Is the derivative of 14x^2 just 28x or do I need the chain rule?

Cacophony · Mar 11, 2012

Homework Statement

What is the derivative of 14x^2?

Homework Equations

The Attempt at a Solution

Do i bring the 2 in front to get 28x? Or do I use the chain rule?

jey1234 · Mar 12, 2012

Cacophony said:

Do i bring the 2 in front to get 28x? Or do I use the chain rule?

28x is the correct answer. Technically you always use the chain rule including in this case. Think about it: derivative of (14x^2) is 28x and derivative of x is 1. So by chain rule, the answer is (28x)(1) = 28x.

Cacophony · Mar 12, 2012

cool beans

Is the derivative of 14x^2 just 28x or do I need the chain rule?

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Is the derivative of 14x^2 just 28x or do I need the chain rule?

Homework Statement

Homework Equations

The Attempt at a Solution

Discussion

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