Integration Substitution u substitution Example 3
Welcome to Calculus Made Easier! In this video, we explore one of the most powerful tools in the integration toolbox: substitution, often called u-substitution.
If you’ve ever looked at a messy integral and thought, “This looks impossible,” you’re in the right place. Substitution is a way to change the perspective—to trade in something complicated for something simpler.
We’ll walk through:
• Why substitution works (and when to use it)
• How to choose your u
• Step-by-step examples with real intuition
• A few subtle gotchas—and how to avoid them