When I work at this I get it as being 4[(x+2)^3/4 ] / 3 + C Is this correct?

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- June 4th 2008, 05:59 AMCrakaindefinate integral x/(x+2)^1/4
When I work at this I get it as being 4[(x+2)^3/4 ] / 3 + C Is this correct?

- June 4th 2008, 06:12 AMPaulRS
mmmm, no, you forgot something there

Thus: - June 4th 2008, 06:21 AMCraka
Thanks PaulRS but how/why do you get x+2-2 on the numerator ?

- June 4th 2008, 07:09 AMmr fantastic
Note that x + 2 - 2 = x. It is done to facilitate breaking the integral up into two more obvious integrals. As an alternative, you could make the substitution u = x + 2 and go from there.

By the way, you can check an answer to an integal by differentiating it and seeing whether the result is equal to the integrand.