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    hey guys im stuck on these two questions and really need help
    find the following indefinite integrals
    1) e^2x arcsin(e^x) dx
    2) (x^2)/(1+x^2)
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    x^2/(1 + x^2) = (1 + x^2 - 1)/(1 + x^2) = 1 - 1/(1+x^2)
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    (1) Start with integration by parts.
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    1) Substitute e^x = sin(u)
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    yusufu how did you get from
    x^2/(1 + x^2) = (1 + x^2 - 1)/(1 + x^2)
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    What does 1 + x^2 -1 equal ?
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    x^2, sorry stupid question but then how would i integrate 1/(1+x^2)?
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    is it ok if anyone could help me on question 1 pls?
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    substitute tanx = u
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    ive done that but am not getting it, is it ok if you could show me how to do it as i maybe doing it wrong, thanks
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    Post your working and then we can see where you're going wrong.
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    im not too sure how to use tan x for the substitution and thats why i dont know how to do it, so is it possible if you could show me how to do it, thanks
 
 
 
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