Here is a solution guide to a problem;

\frac{1}{2} \int \frac {1}{u}du + 2*\frac{1}{2} \int \frac{1}{u^5} du" alt="3*\frac{1}{2} \int \frac {1}{u}du + 2*\frac{1}{2} \int \frac{1}{u^5} du" />

The red is what I don't understand. They drew out the numerator because it was a k value, but where did the one half come from?

Has anyone ever really been far even as decided to use even go want to do look more like?