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Thread: dy/dx = y/x - x/y

  1. December 5th 2009, 04:02 AM #1
    georgiahelo
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    dy/dx = y/x - x/y

    How do I find

    dy/dx = y/x - x/y
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  2. December 5th 2009, 05:01 AM #2
    flyingsquirrel
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    Quote Originally Posted by georgiahelo View Post
    How do I find

    dy/dx = y/x - x/y
    Substitute u=y/x ( \implies y=xu and \frac{\mathrm{d}y}{\mathrm{d}x} = x\frac{\mathrm{d}u}{\mathrm{d}x}+u) and solve for u.
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