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Argh I had a picture for this but dont have enough reputation for anything on here. did it as I don't understand how to insert the maths notation in here.

If $f(x) = \int_0^{g(x)}(1+t^3)^{-1/2} dt$ where $g(x) = \int_0^{\cos x}(1+\sin (t^2)) dt$

I have to find $f'(\pi/2)$

I know it has something to do with substitution and I've tried integrating by parts and things like that too but its not working out. I think theres something about the way that the questions been asked thats not helping anyway thats the first question.

there'll be more in the future im sure.

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    Put in the link to your picture. people here will take care. And, MathJaX is in place here. Enclose math between `$...$` and get guided by your intuition for what a symbol could be!2012-02-24
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    okay thanks for the advice. I'll play guesswork then. thanks henning for adding that in for me2012-02-24

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