Rational Exponents 1
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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?
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Staff Review
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.
