solve-the-PDE-1-Z-px-py-q-pq-2-Z-px-qy-sin-p-q-3-p-1-q-2-q-Z-a-4-Z-xyp-2-

Question Number 87988 by M±th+et£s last updated on 07/Apr/20

s o l v e t h e P D E

1 - Z = p x + p y - q \sqrt{p q}

2 - Z = p x + q y + s i n (p + q)

3 - p (1 + q^{2}) = q (Z - a)

4 - Z = {x y p}^{2}