# Derivative of sin(x^2cos(x))

1. Feb 5, 2013

### Torshi

1. The problem statement, all variables and given/known data

Derivative of sin(x^2cos(x))

2. Relevant equations

Product rule and chain rule

3. The attempt at a solution
[cos(x^2cos(x)) * (2x)(cos(x)) + (x^2)(-sin(x))]

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2. Feb 5, 2013

### Karnage1993

Your answer is very close. The (2x)(cos(x)) + (x^2)(-sin(x)) should be in brackets which is being multiplied by cos(x^2cos(x)). It should look like:

$cos(x^2cos(x))[(2x)cos(x) - x^2sin(x)]$