1.

The polar of a given point which respect to any one of the circles x^(2)+y^(2)-2kx+c^(2)=0, (k is a varaible) always passes through a fixed point whatever to be the value of k is

Answer»

`(x_(1),(X^(2)-C^(2))/(y_(1)))`
`(x_(1),x^(2)-c^(2))`
`((x_(1)^(2)-c^(2))/(y_(1)),-x_(1))`
`(-x_(1),(x_(1)^(2)-c^(2))/(y_(1)))`

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