Originally Posted by

**whitepenguin** The Problem is y' = cos(y - t), find general solution

My thought is to convert them to separable form

y - t = u ---> $\displaystyle dy/dt - 1 = du/dt$ --> Plug them back to original F

$\displaystyle du/dt + 1 = \cos u$

$\displaystyle du / ( \cos u - 1) = dt$

I integrate 2 sides

and I got stuck on this one $\displaystyle \int du / (\cos u - 1) $, please help me solve this problem

or if you have different method to find the general solution for the problem please help me

Thank you