UPSC NDA 2 2019 Mathematics Solved Paper

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Question : 61 of 120

Marks: +1, -0

What is the minimum value of

a2

cos2x

+

b2

sin2x

where a > 0 and b > 0 ?

[NDA II 2019]

(a+b)2
(a−b)2
a2+b2
|a2+b2|

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