(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

Hey, so i need some help trying to find the local max and min points for y = sinxcox^{3}x

2. Relevant equations

3. The attempt at a solution

I know i need to find the first and 2nd derivative but i do not know if i am doing it right. I also do not know what to do after wards.

my first derivative ends up being cos^2x(cos^2x - 3sin^2x)

what do i do after this to solve my question. Help would be appreciated.

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# Homework Help: How to find local max and min points for y = sinxcox^3x

**Physics Forums | Science Articles, Homework Help, Discussion**