pair-st-lines

Related Questions

• The equation of second degree ${{x}^{2}}+2\sqrt{2}xy+2{{y}^{2}}+4x+4\sqrt{2}y+1=0$ represents a pair of straight lines. The distance between them is

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• The condition of representing the coincident lines by the general quadratic equation $f(x,\,y)=0$, is

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• The angle between the lines given by ${{x}^{2}}-{{y}^{2}}=0$ is

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• The value of k so that the equation $2{{x}^{2}}+5xy+3{{y}^{2}}+6x+7y+k=0$ represents a pair of straight lines, is

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• If the equation $2{{x}^{2}}-2hxy+2{{y}^{2}}=0$ represents two coincident straight lines passing through the origin, then $h=$

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