Hello, I am weak in integration. There is a problem which I a m unable to solve, kindly help, The problem is: (dx/dt)^2=w^2(1-cosx)(1+cosx-a) w and a are constants answer is: x=(plus-minus)2tan^(-1){sqrt[(2-a)/(a)]Sech{sqrt[w(w-aw/2)](t-t0)}}. If u find the process, kindly let me know.