# This is not A Homework problem, I am just wondering.

1. May 4, 2010

### bmed90

What would the integral of ln|x| be.

2. May 4, 2010

### jakncoke

Applying integration by parts which states

$$\int u\frac{dv}{dx}\,dx = uv - \int v \frac{du}{dx}\,dx$$
$$u=ln(x)$$ and $$v=x$$ So $$\int ln(x)\,dx = xln(x) - \int x\frac{1}{x}\,dx = xln(x)-x+c$$

3. May 4, 2010

### bmed90

I wouldn't have thought to use parts. Thanks, I appreciate it