Here are the solutions for the given partial differential equations.
a) Solve x2(y−z)p+y2(z−x)q=z2(x−y).
This is a first-order linear partial differential equation of the form Pp+Qq=R, which can be solved using Lagrange's method of characteristics.
The auxiliary equations are given by:
Pdx=Qdy=Rdz
Substituting the given values:
x2(y−z)dx=y2(z−x)dy=z2(x−y)dz