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Math Help - could you help me pls?

  1. #1
    aversion
    Guest

    Question could you help me pls?

    1-) INT (ch^2 x)(sh^2x)dx =?

    2-) INT dx/(sin^3 x+cos^3 x)=?


    3-) INT [x]dx/(x^2+[x]^2)=?


    ıf you answer these question,I will be so happy pls pls....
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  2. #2
    Senior Member ecMathGeek's Avatar
    Joined
    Mar 2007
    Posts
    436
    Quote Originally Posted by aversion View Post
    1-) INT (ch^2 x)(sh^2x)dx =?

    2-) INT dx/(sin^3 x+cos^3 x)=?


    3-) INT [x]dx/(x^2+[x]^2)=?


    ıf you answer these question,I will be so happy pls pls....
    What function are you implying by [x]? Absolute value of x? The floor function?

    The other two problems are awefully familiar. I believe Berkanatci asked the same two questions in an earlier post (though neither has been answered yet).

    I don't know where to begin to solve number 1 (I don't know the hyperbolic functions very well), but I'll try to solve 2.
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