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Math Help - A couple of First-Order DE's I

  1. #1
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    A couple of First-Order DE's I

    y'=(1+x^2)*tgy

    y'=(-1+y^2)/(x*y*(1-x^2))

    Thanks.
    Last edited by Ackbeet; July 25th 2011 at 04:59 AM.
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  2. #2
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    re: A couple of First-Order DE's I

    Here's a better idea, show some manners, show some effort, show where you are stuck, and you might get some help.
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    MHF Contributor FernandoRevilla's Avatar
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    re: A couple of First-Order DE's I

    A little help for the first one: write \dfrac{dy}{\tan y}=(1+x^2)dx (separated variables). Now, integrate both sides, let's see what do you obtain.
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