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The equation of the family of circles, w...

The equation of the family of circles, which same radical axis, as the circles :
`x^2+y^2`=4 and `x^2+y^2+2x+4y=6` is :

A

`x^2+y^2 + 2 lambdax + lambday -(4+lambda)=0`

B

`x^2+y^2+lambda x +2lambday-(4+lambda)=0`

C

`x^2+y^2 +lambda(x-2y-1)=4`

D

`x^2+y^2 +lambda (x+2y-4)=1` , where `lambda` is a parameter.

Text Solution

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The correct Answer is:
B
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MODERN PUBLICATION-CIRCLES AND SYSTEMS OF CIRCLES -MCQs LEVEL - II
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