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If a lt 0 and f(x)=e^(ax )+ e^(-ax) i...

If ` a lt 0` and ` f(x)=e^(ax )+ e^(-ax)` is monotonically decreasing . Find the interval to which x belongs.

A

`x gt 0 `

B

`x lt 0 `

C

`x lt 1`

D

`x lt 1`

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The correct Answer is:
B
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OBJECTIVE RD SHARMA ENGLISH-INCREASING AND DECREASING FUNCTIONS-Exercise
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