1.

The locus of the variable point P for which the chord of contact of touch thecircle x^(2)+ y^(2) = r^(22)is

Answer»

`(x^(2))/(a^(4))+(y^(2))/(b^(4))=(1)/(R^(4))`
`(x^(2))/(a^(4))+(y^(2))/(b^(4))=(1)/(r^(2))`
`(x^(2))/(a^(4))-(y^(2))/(b^(4))=(1)/(r^(4))`
`(x^(2))/(a^(4))-(y^(2))/(b^(4))=(1)/(r^(2))`

Answer :B


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