List of top Mathematics Questions on Partial Differential Equations asked in AP PGECET

The general solution of \( z = px + qy + p^2q^2 \) is
Particular integral of the partial differential equation \( \frac{\partial^2 z}{\partial x^2} - 2 \frac{\partial^2 z}{\partial x \partial y} + \frac{\partial^2 z}{\partial y^2} = 2x \cos y \) is