Integration

• bonkysleuth

  21 Oct 09, 10:10

  how do you integrate tan x? thanks

• eagle

  21 Oct 09, 10:20

  change it to sin x / cos x

  Then notice that sin x is a differential of cos x

  Integrate f'(x) / f(x) style

  Answer, u get

  -ln | cos x | + c

• dkcx

  21 Oct 09, 10:21

  Originally posted by bonkysleuth:

  how do you integrate tan x? thanks

  change it to sinx/cosx

• wee_ws

  21 Oct 09, 13:15

  Hi,

    The same approach will allow us to integrate cot x easily :)

    Try this: Find the integral of (sin x - cos x)/(sin x + cos x) with respect to x. 

    Thanks!

  Cheers,
  Wen Shih