TS EAMCET 6-Aug-2021 Shift 2 Question Paper

Section: Mathematics

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Question : 64 of 160

Marks: +1, -0

If a, b are roots of the equation px2+qx+r = 0, then

lim

x→b

1−cos‌2(px2+qx+r)

2(px−pb)2

=

1
2
(b−a)2
(a+b)2
1
2
a2−2ab+b2

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