Published by:
CGP EDU Academic Team
Published on: August 12, 2026
The curves whose equations are 
intersect in four concyclic points then find relation in 
.
Text Solution
Verified by ExpertsThe correct answer is:
CHECK THE SOLUTION.
Equation of any curve passing through the four points of intersection of S = 0 and S ′ = 0 is S + λ S ′ = 0. For this to be a circle, we must have coefficient of x 2 = coefficient of y 2 & coefficient of xy = 0.
⇒ a + λ a ′ = b + λ b ′
a – b = – λ (a ′ – b ′ )....
and 2h + λ 2h ′ = 0 ⇒ λ = 
....
⇒ from and , a – b = 
(a ′ – b ′ ) or 
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