Hi all ! I'm new here :) So I'm facing some confusions here regarding integration by parts. While surfing through the internet to study more about this topic, I've came across two formulas which are used in solving problems related to integration by parts. They are 1. uv - ∫uv'dx 2. uv - ∫vdu May I know what are the difference between them and how should I use them in solving problems? Thanks a lot.