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October 23, 2014

October 23, 2014

Posted by **Michael** on Sunday, November 4, 2007 at 4:18pm.

- Quick Calc Question -
**Michael**, Sunday, November 4, 2007 at 4:24pmoops, that was supposed to be ye^xy

- Quick Calc Question -
**Count Iblis**, Sunday, November 4, 2007 at 4:24pmYes, you can do integration by parts. Another way is to integrate e^(xy) and then differentiate the answer w.r.t. x.

Integral of e^(x y)dy = 1/x e^(xy) + c

Differentiate both sides w.r.t. x:

Integral of ye^(x y)dy =

(y/x - 1/x^2) e^(xy) + c'

If you use this method then the integration constant is some arbitrary function of x, so when you differentiate you don't get rid of the integration constant.

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