Rational Exponents 1

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Taught by YourMathGal
  • Currently 4.0/5 Stars.
6463 views | 1 rating
Part of video series
Meets NCTM Standards:
Lesson Description:

Part 1 covers the meaning of a fractional exponent when the numerator is 1, and provides examples.

More free YouTube videos by Julie Harland are organized at http://yourmathgal.com

Questions answered by this video:
  • What is a rational exponent?
  • What do you do if there is a fraction in the exponent?
  • What does 5^1/2 mean?
  • Why does 5^1/2 * 5^1/2 = 5?
  • Why does 5^1/2 equal the square root of 5?
  • Why is an exponent of 1/2 the same as a square root?
  • What does the 1/3 power mean?
  • Why is 10^1/3 the same as the cube root of 10?
  • What is 16^1/2?
  • What is 64^1/3?
  • What is the definition of b^1/n?
  • Why does b^1/n equal the nth root of b?
  • What does 81^1/2 equal?
  • What is 16^-1/2?
  • What is -27^1/3?
  • Staff Review

    • Currently 4.0/5 Stars.
    This lesson is a great explanation of why an exponent of 1/2 means the same thing as a square root. This lesson really does a good job of explaining the concept of fractional exponents and how to use them. Several example calculations with fractional exponents are shown and explained in this tutorial.