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Let f(x)=sqrt(1+x^(2)), then :...

Let `f(x)=sqrt(1+x^(2))`, then :

A

`f(xy)=f(x).f(y)`

B

`f(xy) ge f (x).f(y)`

C

`f(xy) le f(x).f(y)`

D

None of these

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Verified by Experts

The correct Answer is:
C
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