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    (Original post by TenOfThem)
    You can

    It is possible to split a numerator but not a denominator
    Yup, sorry about that Do you know if Edexcel tell you if you the integration technique to use in a question?


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    (Original post by TenOfThem)
    You can

    It is possible to split a numerator but not a denominator
    And when doing integration by parts, say if I am integrating x^2(3+2x)^2 can I make u = (3+2x)^2 and v = x^2, I know I can make it the other way around...


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    (Original post by ps1265A)
    Yup, sorry about that Do you know if Edexcel tell you if you the integration technique to use in a question?


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    Only for substitution
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    (Original post by ps1265A)
    And when doing integration by parts, say if I am integrating x^2(3+2x)^2 can I make u = (3+2x)^2 and v = x^2, I know I can make it the other way around...


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    You could do either

    However .... You could just multiply that out
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    (Original post by TenOfThem)
    You could do either

    However .... You could just multiply that out
    Alright thanks!


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    (Original post by TenOfThem)
    You could do either

    However .... You could just multiply that out
    I tried this with the follow Q, but I didn't get the same answer. They used u = ln|secx| instead:

    Name:  ImageUploadedByStudent Room1422122681.341146.jpg
Views: 34
Size:  144.4 KB


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    (Original post by ps1265A)
    I tried this with the follow Q, but I didn't get the same answer. They used u = ln|secx| instead:

    Name:  ImageUploadedByStudent Room1422122681.341146.jpg
Views: 34
Size:  144.4 KB


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    differentiate ln(sec)
    integrate sinx
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    (Original post by ps1265A)
    I tried this with the follow Q, but I didn't get the same answer. They used u = ln|secx| instead:

    Name:  ImageUploadedByStudent Room1422122681.341146.jpg
Views: 34
Size:  144.4 KB


    Posted from TSR Mobile
    You cannot integrate ln so you should always differentiate the ln part in IBP
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    (Original post by TenOfThem)
    You cannot integrate ln so you should always differentiate the ln part in IBP
    Thanks!


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