Use the formula for continuous compounding to solve Exercises 84–85. What annual rate, to the nearest percent, is required for an investment subject to continuous compounding to triple in 5 years?
Table of contents
- 0. Review of Algebra4h 18m
- 1. Equations & Inequalities3h 18m
- 2. Graphs of Equations1h 43m
- 3. Functions2h 17m
- 4. Polynomial Functions1h 44m
- 5. Rational Functions1h 23m
- 6. Exponential & Logarithmic Functions2h 28m
- 7. Systems of Equations & Matrices4h 5m
- 8. Conic Sections2h 23m
- 9. Sequences, Series, & Induction1h 22m
- 10. Combinatorics & Probability1h 45m
6. Exponential & Logarithmic Functions
Solving Exponential and Logarithmic Equations
Problem 1
Textbook Question
Solve each exponential equation in Exercises 1–22 by expressing each side as a power of the same base and then equating exponents. 2x=64
Verified step by step guidance1
Identify the bases on both sides of the equation: the left side is already base 2, and the right side is 64.
Express 64 as a power of 2. Since 64 is a power of 2, write 64 as \$2^{n}\( where \)n$ is an integer.
Rewrite the equation using the same base: \$2^{x} = 2^{n}$.
Since the bases are the same and the equation holds true, set the exponents equal to each other: \(x = n\).
Solve for \(x\) by determining the value of \(n\) from the expression of 64 as a power of 2.
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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Exponential Equations
An exponential equation is one in which variables appear as exponents. Solving these equations often involves rewriting both sides with the same base to compare the exponents directly.
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Expressing Numbers as Powers of the Same Base
To solve exponential equations, rewrite each number as a power of a common base. For example, 64 can be expressed as 2^6, allowing the equation 2^x = 2^6 to be solved by equating exponents.
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Equating Exponents
Once both sides of an exponential equation have the same base, the exponents can be set equal to each other. This reduces the problem to solving a simpler algebraic equation involving the exponents.
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Rational Exponents
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