Question

If u = (x^2 + y^2 + z^2)^1/2
Prove that d^2u/dx^2 + d^2u/dy^2 + d^2u/dz^2 = a/u

Answer 1

Answer:

I have sent you a picture for your question...

I hope this answer is helpful for you please mark this answer as brainliest answer...