In Exercises 89–102, 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(x + 1) = ln x + ln 1
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 95b
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 ln 52)
Verified step by step guidance1
Start by understanding the given function: \(g(x) = e^x\). We need to find \(g(\ln \ln 5^2)\), which means we will substitute \(x\) with \(\ln \ln 5^2\) in the function.
Rewrite the expression inside the logarithms step-by-step. First, simplify the exponent inside the innermost expression: \$5^2\( becomes \)25\(, so the expression becomes \)\ln \ln 25$.
Recall the property of logarithms: \(g(\ln a) = e^{\ln a} = a\). This means that applying \(e^{(\ln (\text{something}))}\) simplifies to just that "something".
Apply this property to \(g(\ln \ln 25)\): since \(g(x) = e^x\), then \(g(\ln \ln 25) = e^{\ln \ln 25} = \ln 25\).
Thus, the original expression simplifies to \(\ln 25\). You can leave the answer in this form or further simplify \(\ln 25\) if needed using logarithm properties.
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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Exponential Functions
Exponential functions have the form f(x) = a^x, where the variable is in the exponent. The function g(x) = e^x uses the constant e (~2.718), which is the base of natural logarithms. Understanding how to evaluate and manipulate these functions is essential for solving expressions involving e raised to a power.
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Logarithmic Functions and Natural Logarithm
Logarithmic functions are the inverses of exponential functions. The natural logarithm, denoted ln(x), is the logarithm with base e. It satisfies the property ln(e^x) = x, which is key to simplifying expressions where logarithms and exponentials are nested.
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Graphs of Logarithmic Functions
Properties of Logarithms and Exponents
Key properties include ln(a^b) = b ln(a) and e^{ln(x)} = x for x > 0. These allow simplification of complex expressions by converting powers inside logarithms or exponents into products or by canceling inverse operations. Applying these properties step-by-step helps evaluate nested expressions like g(ln ln 5^2).
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Change of Base Property
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Textbook Question
