Question

For the function $f\left(x\right)=\frac{\ln x}{x},$ which of the following are true.

• A. $f\left(x\right)$ has horizontaly tangent at x = e
• B. $f\left(x\right)$ cuts the x-axis only at one point
• C. $f\left(x\right)$ is many one function
• D. $f\left(x\right)$ has one vertical tangent

Answer 1

Answer: (A), (B), (C)

The correct options are
A $f\left(x\right)$ has horizontaly tangent at x = e
B $f\left(x\right)$ cuts the x-axis only at one point
C $f\left(x\right)$ is many one function