Question

3. If u = sin y

x + x sin−1 y
x
, prove that x
2
∂
2u
∂x2
+ 2xy
∂
2u
∂x∂y + y
2
∂
2u
∂y2
= 0.

Answer 1

Answer:

can't understand write correctly

Step-by-step explanation:

mark me as brainlist