H2 Maths integration

quailmaster SG

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

wee_ws SG

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 SG

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

quailmaster SG

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