H2 Maths integration

• quailmaster

  6 Mar 11, 00:00

  Integrate  [ e^(3x) ] [ arctan (e^(-2x)) ]

• wee_ws

  6 Mar 11, 06:14

  Hi,

    I used the Wolfram Mathematica Online Integrator to integrate the given expression and obtained a result that is not nice. I feel that a question that is more feasible would be to integrate e^x arctan (e^(-x)) using integration by parts. Other possibilities, upon experimentation with the integrator, are:

    1. e^(2x) arctan (e^(-2x))

    2. e^(2x) arctan (e^(-x))

    3. e^(3x) arctan (e^(-x))

    4. e^(3x) arctan (e^(-3x))

    Thanks.

  Cheers,
  Wen Shih

• eagle

  6 Mar 11, 08:00

  Is the question part of a bigger question that asks you to differentiate or integrate something?

• quailmaster

  6 Mar 11, 08:41

  hi, thanks for all your help.. think prob something wrong with qn..