Question

42. The differential equation for the parabola yz = 4ax, where a is a parameter, is :
chy
(A) 2y4
(B) 2x
dy
dx
у
(C) + y = 0
(D) y dy
+ x = 0
dx​

Answer 1

Answer:

( A. ). 2x

dy

DX

y is the right answer