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The function f(x)=(x)/(x^(2)+1) decreasi...

The function `f(x)=(x)/(x^(2)+1)` decreasing, if

A

`x lt -1 and x gt 1`

B

`-1 lt x lt1`

C

`x lt -1" or "x gt 1`

D

`x le 1 and x ge 1`

Text Solution

Verified by Experts

The correct Answer is:
C
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