- #1

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find this problem really though. I did solve for it's derivative and then by EVT tried to find its crititcal points. I get (-π/2) and (π/2) for f'(x)=0.

The problm is that I'm not sure if there are more solutions for f'(x).

Please see function in problem 1 of attachment:

Any help will be greatly apreciated.

Thank you.

The problm is that I'm not sure if there are more solutions for f'(x).

Please see function in problem 1 of attachment:

Any help will be greatly apreciated.

Thank you.