Question

The partial differential equation of all spheres whose centres lie on the z-axis is

​

Answer 1

Step-by-step explanation:

Required equation is

x2+y2+(z−c)2=r2...(1)

Differentianting partially w.r. to x and y we get

2x+2(z−c)p=0

2y+2(z−c)q=0

⇒(z−c)p=−x...(2)

(z−c)q=−y...(3)

mark as brainliest.