Question

How do i know if a function is increasing​

Answer 1

The logarithm function
`\log_ab`, where
`a,b>0 \wedge a\\ot =1`, is increasing for
`a\in(1,\infty)` and decreasing for
`a\in(0,1)`

`\ln x =\log_ex` and
`e\approx 2.7>1` therefore
`\ln x` is increasing.