Evaluate each expression for p = -4, q = 8, and r = -10. See Example 6. (q + r)/ (q + p)
Table of contents
- 0. Review of College Algebra4h 45m
- 1. Measuring Angles40m
- 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
Problem R.2.107
Textbook Question
Identify the property illustrated in each statement. Assume all variables represent real numbers. (t - 6) • ( 1/(t-6)) = 1, if t - 6 ≠ 0
Verified step by step guidance1
Observe the expression given: \((t - 6) \cdot \left( \frac{1}{t - 6} \right) = 1\), with the condition that \(t - 6 \neq 0\).
Recall the property of multiplication involving a number and its reciprocal: for any nonzero number \(a\), \(a \cdot \frac{1}{a} = 1\).
Identify that in this case, \(a\) corresponds to the expression \((t - 6)\), and its reciprocal is \(\frac{1}{t - 6}\).
Since multiplying a number by its reciprocal results in 1, this equation illustrates the Multiplicative Inverse Property.
Therefore, the property shown here is the Multiplicative Inverse Property, which states that any nonzero number multiplied by its reciprocal equals 1.
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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Multiplicative Inverse Property
This property states that for any nonzero real number a, multiplying a by its reciprocal (1/a) results in 1. It is fundamental in solving equations and simplifying expressions involving division.
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Inverse Cosine
Nonzero Condition in Division
Division by zero is undefined, so the denominator in a fraction must be nonzero. This condition ensures the expression is valid and the multiplicative inverse property can be applied.
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Evaluating Sums and Differences Given Conditions
Properties of Real Numbers
Real numbers follow specific algebraic rules, including the existence of multiplicative inverses for all nonzero elements. Understanding these properties helps in manipulating and simplifying expressions correctly.
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Introduction to Complex Numbers
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