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    Change of variables in differential equation

    Homework Statement I have to transform the following equation using variables (u,v,w(u,v))=(yz-x,xz-y, xy-z): (xy+z)\frac{\partial z}{\partial x}+(1-y^2)\frac{\partial z}{\partial y}=x+yz. Homework Equations chain rule: \frac{dw}{dx} = \frac{\partial w}{\partial u}...
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