The centre of variable circle `x^2+y^2+ 2gx + 2fy + c = 0` lies on the line `2x-2y +9=0` an...
809 views · Published 12 October 2018 · 4:49 · Indexed 21 September 2026
Channel: Doubtnut · 2018 · Education
To ask Unlimited Maths doubts download Doubtnut from - https://goo.gl/9WZjCW The centre of variable circle `x^2+y^2+ 2gx + 2fy + c = 0` lies on the line `2x-2y +9=0` and the variable circle cuts the circle `x^2+y^2=4` orthogonally. If the variable circle passes through two fixed points (a, b) and (c, d) where (b lt d) then the value of 2b + d is equal to
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