The equation of pair of straight lines perpendicular to the pair \[a{{x}^{2}}+2hxy+b{{y}^{2}}=0\] is [MP PET 1989]

\[a{{x}^{2}}-2hxy+b{{y}^{2}}=0\]

\[b{{x}^{2}}+2hxy+a{{y}^{2}}=0\]

\[a{{y}^{2}}-2hxy+b{{x}^{2}}=0\]

The equation of pair of straight lines perpendicular to the pair \[a{{

1.	The equation of pair of straight lines perpendicular to the pair \[a{{x}^{2}}+2hxy+b{{y}^{2}}=0\] is [MP PET 1989]
A.	\[a{{x}^{2}}-2hxy+b{{y}^{2}}=0\]
B.	\[b{{x}^{2}}+2hxy+a{{y}^{2}}=0\]
C.	\[a{{y}^{2}}-2hxy+b{{x}^{2}}=0\]
D.	\[a{{y}^{2}}-b{{x}^{2}}=0\]
Answer» D. \[a{{y}^{2}}-b{{x}^{2}}=0\]

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The equation of pair of straight lines perpendicular to the pair \[a{{x}^{2}}+2hxy+b{{y}^{2}}=0\] is [MP PET 1989]

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