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Question

The equation of the asymptotes of the hyperbola 2x2+5xy+2y211x7y4=0, is

A
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B
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C
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D
None of these
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Solution

The correct option is C
Equation of hyperbola is
2x2+5xy+2y211x7y4=0 …… (i)
Let asymptotes of the hyperbola (i) be
2x2+5xy+2y211x7y+c=0 …… (ii)
Since, equation (ii) represents a pair of lines.
∣ ∣ ∣25/211/25/227/211/27/2c∣ ∣ ∣=0
112(354+11)+72(7+554)+c(4254)=0 94c=998+1898=908c=5
Equation of the required asymptotes is
2x2+5xy+2y211x7y+5=0

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