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If the circle $x^2+y^2+2\,gx+2fy+=0,$ and $x^2+y^2+2g'x+2f'y$ touch each other, then
If the circle $x^2+y^2+2\,gx+2fy+=0,$ and $x^2+y^2+2g'x+2f'y$ touch each other, then
Updated On: May 12, 2024
- fg=f'g'
- g=fg'
- ff ' = gg'
- none of these
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The Correct Option is B
Solution and Explanation
Answer (b) g=fg'
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