Hi all,

I'm struggling with the following maximum and minimum values question. The questions states: Find the absolute maximum and minimum values of the function.

$\displaystyle f(x)=2secx+tanx, -\pi\le x \le 2\pi$

I know that the derivative is

$\displaystyle 2tanxsecx+sec^2x$

and I know I make that equal to zero to find critical numbers but I'm having trouble solving for x. A little help would be greatly appreciated. Thanks!

newslang