pair-st-lines

Related Questions

• The angle between the lines ${{x}^{2}}+4xy+{{y}^{2}}=0$ is

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• If the lines $(p-q){{x}^{2}}+2(p+q)xy+(q-p){{y}^{2}}=0$ are mutually perpendicular, then

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• If the equation $A{{x}^{2}}+2Bxy+C{{y}^{2}}+Dx+Ey+F=0$ represents a pair of straight lines, then ${{B}^{2}}-AC$

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• The nature of straight lines represented by the equation $4{{x}^{2}}+12xy+9{{y}^{2}}=0$ is

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• If the slope of one of the lines represented by $a{{x}^{2}}+2hxy+b{{y}^{2}}=0$ be the square of the other, then

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