Integration by substitution is a fundamental technique used to simplify integrals by reversing the chain rule. It allows complex integrals to be transformed into standard forms through an appropriate change of variable, making them easier to evaluate accurately and efficiently. In IB Mathematics, this method is essential for solving a wide range of integrals involving composite functions and algebraic expressions. Mastery of substitution helps students recognize underlying structures within integrands, select effective substitutions, and apply limits correctly in definite integrals.
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.
