Question
Differential form of ol conics whose axes coincide with the co-ordinate axes??Joshi sir comment
let us consider the case of ellipse with x and y axes as their axes
eq. is x2/a2 + y2/b2= 1
on differentiating we get 2x/a2 + 2yy'/b2 = 0 y'is first differential
so yy'/x = -b2/a2
again differentiate and get answer.
You should remember that you should differentiate as many times as the number of constants.
for ex. in the case of parabola only first diffrentiation is sufficient.
now complete it for all conics