Table of contents
- 0. Review of Algebra4h 16m
- 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 19m
- 10. Combinatorics & Probability1h 45m
6. Exponential & Logarithmic Functions
Properties of Logarithms
Problem 15c
Textbook Question
Find each value. If applicable, give an approximation to four decimal places. See Example 1. . log 63
![](/channels/images/assetPage/verifiedSolution.png)
1
Step 1: Understand that the problem is asking for the logarithm of 63, which is written as \( \log_{10}(63) \). This is the common logarithm, meaning the base is 10.
Step 2: Recognize that \( \log_{10}(63) \) is asking the question: 'To what power must 10 be raised to get 63?'
Step 3: Use a calculator to find \( \log_{10}(63) \). Most scientific calculators have a 'log' button that can be used to find this value directly.
Step 4: Enter 63 into the calculator and press the 'log' button to compute the logarithm.
Step 5: The calculator will provide a decimal value. If needed, round this value to four decimal places to get the final approximation.
Recommended similar problem, with video answer:
![](/channels/images/assetPage/verifiedSolution.png)
This video solution was recommended by our tutors as helpful for the problem above
Video duration:
2mPlay a video:
Was this helpful?
Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Logarithms
A logarithm is the inverse operation to exponentiation, answering the question: to what exponent must a base be raised to produce a given number? For example, log base 10 of 100 is 2, since 10^2 = 100. Understanding logarithms is essential for solving problems involving exponential growth or decay.
Recommended video:
Logarithms Introduction
Base of a Logarithm
The base of a logarithm determines the number system used for the logarithmic calculation. Common bases include 10 (common logarithm) and e (natural logarithm). The choice of base affects the value of the logarithm, so it's important to identify the base when solving logarithmic equations.
Recommended video:
Logarithms Introduction
Approximation and Rounding
Approximation involves estimating a value to a certain degree of accuracy, often rounding to a specified number of decimal places. In this context, approximating log 63 to four decimal places means finding a value close to the actual logarithm and expressing it with four digits after the decimal point, which is crucial for precision in calculations.
Recommended video:
Graph Hyperbolas at the Origin
Watch next
Master Product, Quotient, and Power Rules of Logs with a bite sized video explanation from Callie
Start learningRelated Videos
Related Practice