AP EAMCET Engineering 26 Apr 2017 Shift 1 Paper

Section: Mathematics

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Question : 59 of 160

Marks: +1, -0

If lx+my=1 is a normal to the hyperbola

x2

a2

−

y2

b2

=1,then‌a2‌m2−b2l2 =

l2m2(a2+b2)2
(l2+m2)(a2+b2)2
l2
m2
(a2+b2)
m2
l2
(a2+b2)

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