Question

Can anyone help me with this. Find the anti derivatives of ∫ (sin^4 x ) (cos^3 x ) dx using substitution ?

Answer 1

Use the substitution u=sinx. This gives du =cosx dx and use the fact that cos^2 x = 1 - sin^2 x

Answer 2

ok thanks. forget about cos^2 x + sin^2 x = 1