Change of Variables (Substitution)

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Taught by Houston
  • Currently 4.0/5 Stars.
3946 views | 3 ratings
Meets NCTM Standards:
Lesson Description:

Differentials. Using basic "u-substitutions" to find indefinite integrals and compute definite integrals.

Copyright 2005, Department of Mathematics, University of Houston. Created by Selwyn Hollis. Find more information on videos, resources, and lessons at

Additional Resources:
Questions answered by this video:
  • What is change of variables in Calculus?
  • What is u-substitution in Calculus?
  • What is a differential?
  • What are formulas for differentials?
  • What is the reverse chain rule?
  • How do you do u-substitution?
  • How do you find u and du to find an integral?
  • How do you find the integral of x/(x - 1)^3?
  • How do you find definite integrals using u-substitution?
  • Staff Review

    • Currently 4.0/5 Stars.
    Differentials are at the forefront of this lesson. They are used to introduce changing variables in Calculus problems, also called u-substitution. This concept is vital to finding integrals in Calculus. Many example problems where you can see u-substitution in action are shown, so you can see several different scenarios. Both indefinite and definite integrals are shown.
  • Vince_II

    • Currently 4.0/5 Stars.
    Definite integral part. The reason why we have U in this case is to find the differential and constant. Never do we replace the U substitution with the previous variable that was replaced.