How to solve this integral word problem from a chapter review

[karush]

https://www.physicsforums.com/attachments/5718

This was the last question in the chapter review of integral techniques
Since I will eventually will be confronted with this would like to how it is solved. Step one is??

 

[Prove It]

This was the last question in the chapter review of integral techniques
Since I will eventually will be confronted with this would like to how it is solved. Step one is??

Do you know how to set up a Work Integral?

 

[karush]

just quessing as a start
$\displaystyle
\frac{1}{4\pi e_0}\int_{1}^{q} \,d?$