Question

Evaluate ∫((sin4x-2)/(1-cos4x))e^2x dx

\(\int\frac{sin\,4x-2}{1-cos\,4x}e^{2x}\) dx

Answer 1

∫((sin4x-2)/(1-cos4x))e^2x dx

Put 2x = t; 

2dx = dt;

dx = dt/2