Answer to Question #183129 in Differential Equations for sindhu priya

Question #183129

z= xy+f(x^2+y^2+z^2)



1
Expert's answer
2021-05-04T12:32:59-0400

z=xy+f(x2+y2+z2)zx=y+2xf(x2+y2+z2)zy=x+2yf(x2+y2+z2)yzx=y2+2xyf(x2+y2+z2)xzy=x2+2xyf(x2+y2+z2)yzxxzy=y2x2\displaystyle z = xy + f(x^2 + y^2 + z^2)\\ \frac{\partial z}{\partial x} = y + 2xf(x^2 + y^2 + z^2)\\ \frac{\partial z}{\partial y} = x + 2yf(x^2 + y^2 + z^2)\\ y\frac{\partial z}{\partial x} = y^2 + 2xyf(x^2 + y^2 + z^2)\\ x\frac{\partial z}{\partial y} = x^2 + 2xyf(x^2 + y^2 + z^2)\\ y\frac{\partial z}{\partial x} - x\frac{\partial z}{\partial y} = y^2 - x^2


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