Question

The differential equation of the orthogonal trajectories is obtained from the differential equation of the
given family of the curves dy/dx by written
(A) dx/dy
(B) dy/dx
(C) (-dx/dy)
(D) all of these​

Answer 1

Answer:

d.all of these

Step-by-step explanation:

hope that this will help you but I don't know the correct answer

Answer 2

Answer:

all of these -----------------