Table of contents
- 0. Review of Algebra4h 16m
- 1. Equations & Inequalities3h 18m
- 2. Graphs of Equations43m
- 3. Functions2h 17m
- 4. Polynomial Functions1h 44m
- 5. Rational Functions1h 23m
- 6. Exponential & Logarithmic Functions2h 28m
- 7. Systems of Equations & Matrices4h 6m
- 8. Conic Sections2h 23m
- 9. Sequences, Series, & Induction1h 19m
- 10. Combinatorics & Probability1h 45m
0. Review of Algebra
Exponents
2:33 minutes
Problem 69c
Textbook Question
Textbook QuestionIn Exercises 59–70, evaluate each exponential expression. - (-1/2)^3
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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Exponential Expressions
Exponential expressions involve a base raised to a power, indicating how many times the base is multiplied by itself. In the expression (-1/2)^3, the base is -1/2 and the exponent is 3, meaning we multiply -1/2 by itself three times.
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Simplifying Exponential Expressions
Negative Bases
When dealing with negative bases, the sign of the result depends on whether the exponent is odd or even. An odd exponent, like 3 in this case, will yield a negative result, while an even exponent would result in a positive value.
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Calculating Powers
To calculate a power, multiply the base by itself as many times as indicated by the exponent. For (-1/2)^3, this involves computing (-1/2) * (-1/2) * (-1/2), which requires careful handling of both the numerators and denominators.
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