Teaching Jharkhand (JSSC) TGT (6 to 8) Mock Test 2023-24 Engineering Mathematics Differential Equations Partial Differential Equations
z = (x + y) f(x2 – y2) से बनने वाला आंशिक अवकल समीकरण ____ है।
1
px + qy = z
2
py + qx = z
3
py - qx = z
4
px - qy = z