- #1

Krushnaraj Pandya

Gold Member

- 697

- 73

## Homework Statement

∫e^(-x)(1-tanx)secx dx

**2. Attempt at a solution**

I know ∫e^x(f(x)+f'(x))=e^x f(x)

and I intuitively know f(x) could be secx here and therefore f'(x) will be secxtanx but I can't figure out how to reach that