1.

What is `int sin ^(3) x cos x dx` equal to ? Where c is the constant of integrationA. `cos^(4) x + c`B. `sin^(4) x + c`C. `((1 - sin^(2)x)^(2))/(4) + c`D. `((1 - cos^(2) x)^(2))/(4) + c`

Answer» Correct Answer - D
Let `t = sin x rArr dt = cos x dx`
`int sin^(3) x cos x dx = int t^(3) dt = (t^(4))/(4) + c = (sin^(4)x)/(4) + c`
`= ((1 - cos^(2)x)^(2))/(4) + c`


Discussion

No Comment Found

Related InterviewSolutions