circle

Related Questions

• The equation ${{x}^{2}}+{{y}^{2}}+4x+6y+13=0$ represents

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• The radical centre of three circles described on the three sides of a triangle as diameter is

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• A circle passes through (0, 0) and (1, 0) and touches the circle ${{x}^{2}}+{{y}^{2}}=9$ , then the centre of circle is

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• If a circle passes through the points of intersection of the coordinate axis with the lines $\lambda x-y+1=0$ and $x-2y+3=0$ , then the value of $\lambda $ is

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• The equation of the tangent at the point $\left( \frac{a{{b}^{2}}}{{{a}^{2}}+{{b}^{2}}},\frac{{{a}^{2}}b}{{{a}^{2}}+{{b}^{2}}} \right)$ of the circle ${{x}^{2}}+{{y}^{2}}=\frac{{{a}^{2}}{{b}^{2}}}{{{a}^{2}}+{{b}^{2}}}$ is

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