# Thread: Help with graphing in calc

1. ## Help with graphing in calc

Hi!

I was just given some homework from my professor and I've found it to be a little tougher than I thought; So if anyone could help that'd be awesome!!

The problem I have is 2cos^2x-4sinx x between 0, 2pi and we're looking for where it is increasing and decreasing, the local max and min values, inflection points and the intervals where the graph is concave up and concave down.

Thank you in advance for helping me out! I missed a day and obviously it has been keeping me from doing well!

2. ## Re: Help with graphing in calc

Originally Posted by BernieBriggs
Hi!

I was just given some homework from my professor and I've found it to be a little tougher than I thought; So if anyone could help that'd be awesome!!

The problem I have is 2cos^2x-4sinx x between 0, 2pi and we're looking for where it is increasing and decreasing, the local max and min values, inflection points and the intervals where the graph is concave up and concave down.

Thank you in advance for helping me out! I missed a day and obviously it has been keeping me from doing well!
look at this

Since you posted in calculus I assume you can take derivatives and find minima and maxima of functions etc. Well do all that. You'll need to find the first and second derivatives of your function, and you'll need to solve where the first derivative equals zero on your interval of 0, 2pi.