How to Ace U-Substitution Questions on Your Exam

Are you consistently losing points on U-Substitution because of forgetting to change the bounds of integration? If so, you're making the exact same error as 80% of your class.

Your Timeline

• Minute 1: Identify the variables. Don't start solving.
• Minute 2: Check for edge cases. Are you about to commit the sin of forgetting to change the bounds of integration?
• Minute 3-5: Execute. Keep this application in mind: If you evaluate ∫ from 0 to 2 of 2x * e^(x^2) dx, and let u = x^2, your new bounds are u=0 to u=4. Leaving them as 0 to 2 ruins the final calculation.

Stick to the timeline. Methodical execution beats panicked guessing every single time.

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