Integration by substitution

Substitution is the integration equivalent of decluttering your room: you take something messy, give it a simple temporary name, move it around and suddenly everything is clean and manageable. Once you learn how to spot the perfect substitution, integrals that looked impossible become surprisingly easy.

Start here

Start by downloading the cheat sheet and the vocabulary below. After that, move to the video lessons with their respective exercise lists.

Take the mock exams

It’s time to put your knowledge to the test with our mock exams — the closest experience you’ll get to the real IB Math exams. Note: read the instructions on taking mock exams here.