circle

Related Questions

• The equation of radical axis of the circles ${{x}^{2}}+{{y}^{2}}+x-y+2=0$ and $3{{x}^{2}}+3{{y}^{2}}-4x-12=0,$ is

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• The point (2, 3) is a limiting point of a coaxial system of circles of which ${{x}^{2}}+{{y}^{2}}=9$ is a member. The co-ordinates of the other limiting point is given by

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• If the line $x=k$ touches the circle ${{x}^{2}}+{{y}^{2}}=9$ , then the value of $k$ is

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• The value of c, for which the line $y=2x+c$ is a tangent to the circle ${{x}^{2}}+{{y}^{2}}=16$ , is

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• If the centre of a circle which passing through the points of intersection of the circles ${{x}^{2}}+{{y}^{2}}-6x+2y+4=0$ and ${{x}^{2}}+{{y}^{2}}+2x-4y-6=0$ is on the line $y=x$ , then the equation of the circle is

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