differentiation

Question: The function $f(x)={{x}^{1/x}}$is

1) Increasing in $(1,\,\,\infty )$

2) Decreasing in $(1,\,\,\infty )$

3) Increasing in $(1,\,e),$ decreasing in $(e,\infty )$

4) Decreasing in $(1,\,e),$ increasing in $(e,\infty )$

Solution:

Explanation: No Explanation

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