Question

The first quadrant point on the curve (y^2)(x) = 18 which is closest to the point (2,0) is
a) (2,3)
b) (6, sqrt(3))
c) (3, sqrt(6))
d) (1, 3sqrt(2))
e) none of the above

Answer 1

let that point be (x0, y0).
Now can you tell me eqn of the normal on this curve passing through (x0,y0) ?