coordinate

Question: The locus of a point whose distance from the point $(-g,-f)$is always 'a', will be, (where $k={{g}^{2}}+{{f}^{2}}-{{a}^{2}}$)



1) ${{x}^{2}}+{{y}^{2}}+2gx+2fy+k=0$
2) ${{x}^{2}}-{{y}^{2}}+2gx+2fy+k=0$
3) ${{x}^{2}}+{{y}^{2}}+2xy+2gx+2fy+k=0$
4) None of these
Solution: Explanation: No Explanation
Transformation of axes and Locus

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