This looks like a tan^-1x type answer but the actual answer is different and I am not sure of the process to get there.
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okay so separate it out:
The part with the 3 is just arctan. Use a substitution on the other part:
u = x^2 + 1 --> du = 2xdx ---> dx = du/(2x), and so the integral should give a natural log.
Last edited by mr fantastic; March 8th 2009 at 05:29 AM.
Originally Posted by Mentia Whoops, that funny part is: haha thank goodness I didn't have to try to sort out the first post lol. This is so obvious no that I see it
thank you so much for taking the time
Last edited by mr fantastic; March 8th 2009 at 05:28 AM.
Reason: Added oness ....
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