# Homework Help: Inequality Question

1. Dec 4, 2011

### Punkyc7

is

$\frac{x-1}{x}$<ln(x)<x-1

valid for 0<x<1

I think it is I just want to get a second opinion.

2. Dec 4, 2011

### hunt_mat

One way to look at these things is to examine the functions:
$$f(x)=\frac{x-1}{x}-\ln x\quad g(x)=\ln x-(x-1)$$
and compute the derivatives f'(x) and g'(x) and examine if f(x) and g(x) are increasing or decreasing functions and examine the values for certain points and the inequality should drop out.