Table of contents

0. Review of Algebra4h 18m
1. Equations & Inequalities3h 18m
2. Graphs of Equations43m
3. Functions2h 17m
4. Polynomial Functions1h 44m
5. Rational Functions1h 23m
6. Exponential & Logarithmic Functions2h 28m
7. Systems of Equations & Matrices4h 6m
8. Conic Sections2h 23m
9. Sequences, Series, & Induction1h 22m
10. Combinatorics & Probability1h 45m

6. Exponential & Logarithmic Functions

Properties of Logarithms

College Algebra

6. Exponential & Logarithmic Functions

Properties of Logarithms

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1:56 minutes

Problem 55

Textbook Question

Find each value. If applicable, give an approximation to four decimal places. See Example 5. ln (27 * 943)

Verified step by step guidance

Step 1: Use the property of logarithms that states ln(a * b) = ln(a) + ln(b).

Step 2: Apply this property to the expression ln(27 * 943), which becomes ln(27) + ln(943).

Step 3: Calculate ln(27) using a calculator or logarithm table.

Step 4: Calculate ln(943) using a calculator or logarithm table.

Step 5: Add the results from Step 3 and Step 4 to find the final value of ln(27 * 943).

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Key Concepts

Here are the essential concepts you must grasp in order to answer the question correctly.

Natural Logarithm (ln)

The natural logarithm, denoted as 'ln', is the logarithm to the base 'e', where 'e' is approximately equal to 2.71828. It is used to solve equations involving exponential growth or decay and is particularly useful in calculus and complex analysis. Understanding how to compute 'ln' values is essential for solving problems that involve exponential functions.

Properties of Logarithms

Logarithms have several key properties that simplify calculations, such as the product rule, which states that ln(a * b) = ln(a) + ln(b). This property allows us to break down complex logarithmic expressions into simpler components, making it easier to compute values. Familiarity with these properties is crucial for manipulating logarithmic expressions effectively.

Approximation Techniques

In many mathematical contexts, especially when dealing with logarithms, it is often necessary to approximate values to a certain number of decimal places. Techniques such as using a calculator or logarithm tables can help achieve this. Understanding how to round numbers correctly and the significance of precision in calculations is important for providing accurate answers.