Hi. I read a few things about integration on my maths book and googled it up. I think i got the idea of it, but there's something that's still confusing me:(adsbygoogle = window.adsbygoogle || []).push({});

I found this formula but i can't see how it can be true

[tex] \int u^n du = \frac{u^{n+1}}{n+1} + C [/tex]

however, as far as i remember:

(u^n)' = n*u'*u^(n-1)

How can this be right. where did that (u') go???

For example: plz tell me how to solve this one:

[tex] \int (1-x^2)^\frac{1}{2} dx [/tex]

using the formula i'd say:

[tex] \frac{2(1-x^2)^\frac{3}{2}}{3} [/tex]

but this can't be right.

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# Ntegration on my maths book

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