Question

∫tanx.secx²xdx=?

Answer 1

`inttanxsec^2xdx=1/2tan^2x+c`

Explanation:

Let `u=tanx`, then `du=sec^2xdx`

and `inttanxsec^2xdx=intudu`

= `u^2/2+c`

= `1/2tan^2x+c`