$$\frac{\partial ^3z}{\partial x^3}-4\frac{\partial^3z}{\partial x ^2\partial y}+4\frac{\partial ^3 z}{\partial x \partial y^2}=2sin(3x+2y)$$
What is wrong with my solution?
$$\frac{\partial ^3z}{\partial x^3}-4\frac{\partial^3z}{\partial x ^2\partial y}+4\frac{\partial ^3 z}{\partial x \partial y^2}=2sin(3x+2y)$$
What is wrong with my solution?
Our solution is corect. With free CAS Maxima: