Calculate :
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Hi, Originally Posted by dhiab Calculate : Substitute or use a partial fraction decomposition.
Originally Posted by dhiab Calculate : the first is ln(x) the second by substitute u=x^2+1 du=2x dx it is clear right
Last edited by mr fantastic; Jul 17th 2009 at 08:20 PM. Reason: Fixed the tag in second line of latex
Thanks for all : Demath , Flyinquirrel, Amer I'have anathor solution :
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