If a<0, the function f(x)=e^ a x +e^ -a x is a monotonically decreasing function. Then x…
Mathematics · JEE Main · NTA Exams — Limit, Continuity and Differentiability
If \(a<0,\) the function \(f(x)=e^{a x}+e^{-a x}\) is a monotonically decreasing function. Then x is given by
- \(x>0\)
- \(x<0\)
- \(x>1\)
- \(x<1\)
Answer
(B) x<0
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