Question
If $a<0$, the function $\left(e^{a x}+e^{-a x}\right)$ is a monotonic decreasing function for all values of $x$, where(A) $x>0$(B) $x<0$(C) $x>1$(D) $x<1$
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We need to find for which values of $x$, this function is a monotonic decreasing function. Show more…
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