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If f(x) is continuous at x=0, where f(x...

If `f(x)` is continuous at `x=0`, where `f(x)={:{(x^(2)+1", for " x ge 0),(2sqrt(x^(2)+1)+k ", for " x lt 0):}` , then `k=`

A

3

B

-2

C

-1

D

1

Text Solution

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The correct Answer is:
C
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