Table of contents
- 0. Review of College Algebra4h 43m
- 1. Measuring Angles39m
- 2. Trigonometric Functions on Right Triangles2h 5m
- 3. Unit Circle1h 19m
- 4. Graphing Trigonometric Functions1h 19m
- 5. Inverse Trigonometric Functions and Basic Trigonometric Equations1h 41m
- 6. Trigonometric Identities and More Equations2h 34m
- 7. Non-Right Triangles1h 38m
- 8. Vectors2h 25m
- 9. Polar Equations2h 5m
- 10. Parametric Equations1h 6m
- 11. Graphing Complex Numbers1h 7m
0. Review of College Algebra
Solving Linear Equations
2:21 minutes
Problem 59c
Textbook Question
Textbook QuestionFind each product or quotient where possible. See Example 2. 12⁄13 -4⁄3
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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Fractions
Fractions represent a part of a whole and are expressed as a ratio of two integers, where the numerator is the top number and the denominator is the bottom number. Understanding how to manipulate fractions, including addition, subtraction, multiplication, and division, is essential for solving problems involving them. In this context, recognizing how to find products and quotients of fractions is crucial.
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Multiplication of Fractions
To multiply fractions, you multiply the numerators together and the denominators together. For example, multiplying 12/13 by -4/3 involves calculating (12 * -4) for the numerator and (13 * 3) for the denominator. This process simplifies the multiplication of fractions into a straightforward arithmetic operation, yielding a new fraction as the result.
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Division of Fractions
Dividing fractions involves multiplying by the reciprocal of the divisor. For instance, to divide 12/13 by -4/3, you would multiply 12/13 by the reciprocal of -4/3, which is -3/4. This concept is fundamental in fraction operations and allows for the simplification of complex fraction problems into manageable calculations.
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