Show that there does not exist any function $f ( x , y )$ with continuous second partial derivatives such that $\frac { \delta f } { \delta x } = 2 y$ and $\frac { \partial f } { \partial y } = - 2 x$

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The Answer of Show that there does not exist any function $f ( x , y )$ with continuous second partial derivatives such that $\frac { \delta f } { \delta x } = 2 y$ and $\frac { \partial f } { \partial y } = - 2 x$

Show That There Does Not Exist Any Function f(x,y)f ( x , y )f(x,y)

Show That There Does Not Exist Any Function $f ( x , y )$