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UPSC NDA II 2015 Mathematics Solved Paper

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For the next two(2) items that follow :
Consider the function

f(x)={

−2sinx

if

x≤−

π

2

Asinx+B

if

−

π

2

<x<

π

2

cosx

if

x≥

π

2

Which is continuous everywhere

[NDA II 2015]

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Question : 99

Total: 120

The value of A is ?

1
0
-1
2

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