If the ratio of gradients of the lines represented by \[a{{x}^{2}}+2hxy+b{{y}^{2}}=0\]is 1 : 3, then the value of the ratio \[{{h}^{2}}:ab\]is [MP PET 1998]

If the ratio of gradients of the lines represented by \[a{{x}^{2}}+2hx

1.	If the ratio of gradients of the lines represented by \[a{{x}^{2}}+2hxy+b{{y}^{2}}=0\]is 1 : 3, then the value of the ratio \[{{h}^{2}}:ab\]is [MP PET 1998]
A.	\[\frac{1}{3}\]
B.	\[\frac{3}{4}\]
C.	\[\frac{4}{3}\]
D.	1
Answer» D. 1

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If the ratio of gradients of the lines represented by \[a{{x}^{2}}+2hxy+b{{y}^{2}}=0\]is 1 : 3, then the value of the ratio \[{{h}^{2}}:ab\]is [MP PET 1998]

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