If curves `y^2=6x` and `9x^2+by^2=16` intersect orthogonally, then b is equal to

If the curves 2x^(2)+3y^(2)=6 and ax^(2)+4y^(2)=4 intersect orthogonally, then a =

If the curves 2x^(2)+3y^(2)=6 and ax^(2)+4y^(2)=4 intersect orthogonally, then a =

If the circles x^2 + y^2 + 2x + 2ky + 6 = 0 and x^2 + y^2 + 2ky + k = 0 intersect orthogonally, then k is equal to _____

If the curve ax^(2)+by^(2)=1 and a'x^(2)+b'y^(2)=1 intersect orthogonally, then

If the circles x^(2) + y^(2) + 2x + 2ky + 6 = 0 and x^(2) + y^(2) + 2ky + k = 0 intersect orthogonally , then k is equal to _

The curves ax^(2)+by^(2)=1 and Ax^(2)+B y^(2) =1 intersect orthogonally, then

If curve x^2=9a(9-y) and x^2=a(y+1) intersect orthogonally then value of 'a' is

If the curvs a x^2 + b y^2 = 1 and a' x^2 + b' y^2 =1 intersect orthogonally, then prove that frac{1}{a} - frac{1}{b} = frac{1}{a'} - frac{1}{b'}