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Pls can you check my integration answer Watch

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    What do we get when we integrate the follwing ? is my answer to the question right? thanks in advance !

    y=2sinxcos^3x

    and I got -1/2 cos^4 x +C
    is this right?
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    (Original post by laurawoods)
    What do we get when we integrate the follwing ? is my answer to the question right? thanks in advance !

    y=2sinxcos^3x

    and I got -1/2 cos^4 x +C
    is this right?
    Yes.
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    In future, if you just just want to check you've done an integral correctly, it might be worth putting it into wolfram alpha.

    For example:
    http://www.wolframalpha.com/input/?i...9%29%5E3+wrt+x

    Wolfram Alpha is one of the best friends a maths or physics student can have! Though it shouldn't be used to do your homework for you, it's very helpful for checking answers, or solving integrals which can't be done analytically (or with the techniques you have learnt).
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    thanks for both of these answers



    phew
 
 
 
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