intergral x((2x)/(x^2+1))dx Somebody mentioned a sub u= x^2+1 so it is then ln (x^2+1) but what about the x in front of the problem
Last edited by Bust2000; Mar 4th 2008 at 07:51 AM.
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Originally Posted by Bust2000 X ((2x)/(X^2+1))dx Somebody mentioned a sub u= x^2+1 so it is then ln (x^2+1) but what about the x in front of the problem do you know hot to do the substitution? if then get it already?
Hello, Bust2000 X ((2x)/(X^2+1))dx Check the original problem again . . . Is that really an in front? . . Could it be somebody's multiplication-sign? Why wasn't the problem presented as: .
yes there really is an x in front not a multiplication sign
If it's really , So it becomes,
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