Consider a circle C_1: x^2+y^2-4x-2y= -5. Let its mirror image in the line y = 2x + 1 be another circle C_2:...

Question

Consider a circle C_1: x^2+y^2-4x-2y= -5. Let its mirror image in the line y = 2x + 1 be another circle C_2: 5x^2+5y^2-10fx-10gy+36=0. Let r be the radius of C_2. Then + r is equal to ________.

Accepted Answer

2

JEE Main 2023 Mathematics question

Solution