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!