Determine whether each equation is true or false. Where possible, show work to support your conclusion. If the statement is false, make the necessary change(s) to produce a true statement. ln(8x3) = 3 ln (2x)
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
Properties of Logarithms
Problem 95c
Textbook Question
Use the various properties of exponential and logarithmic functions to evaluate the expressions in parts (a)–(c). Given g(x) = ex, find g(ln 1/e)
Verified step by step guidance1
Recall the given function: \(g(x) = e^x\).
Identify the input to the function: \(\ln \left( \frac{1}{e} \right)\).
Use the logarithmic property that \(\ln \left( \frac{1}{a} \right) = -\ln a\) to rewrite the input as \(-\ln e\).
Since \(\ln e = 1\), simplify the input to \(-1\).
Evaluate \(g(-1)\) by substituting into the function: \(g(-1) = e^{-1}\).
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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Exponential Functions
An exponential function has the form f(x) = a^x, where the base a is a positive constant. The function g(x) = e^x uses the natural base e (~2.718), which is fundamental in continuous growth and decay models. Understanding how to evaluate e raised to various powers is essential for solving the given problem.
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Logarithmic Functions and Natural Logarithm
A logarithmic function is the inverse of an exponential function. The natural logarithm, denoted ln(x), is the logarithm with base e. It satisfies the property ln(e^x) = x, which helps simplify expressions involving e and ln, such as ln(1/e).
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Graphs of Logarithmic Functions
Properties of Logarithms and Exponents
Key properties include ln(a/b) = ln(a) - ln(b), ln(e) = 1, and e^{ln(x)} = x for x > 0. These properties allow rewriting and simplifying expressions like ln(1/e) into manageable forms, enabling direct evaluation of functions like g(ln(1/e)).
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Change of Base Property
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