The function f(x) =e^(ax) +e^(-ax), agt ...

The function f(x) =`e^(ax) +e^(-ax), agt 0` is monotonically increasing for

A

`-1 lt x lt 1`

B

`x lt -1`

C

`x gt -1`

D

`x gt 0`

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The correct Answer is:

D

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