교과서 질문
Use properties of logarithms to condense each logarithmic expression. Write the expression as a single logarithm whose coefficient is 1. Where possible, evaluate logarithmic expressions without using a calculator. log 5 + log 2
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Ch. 4 - Exponential and Logarithmic Functions
Blitzer8th EditionCollege AlgebraISBN: 9780136970514
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TOC.tableOfContents
- Ch. P - Fundamental Concepts of Algebra311
- Ch. 1 - Equations and Inequalities398
- Ch. 2 - Functions and Graphs407
- Ch. 3 - Polynomial and Rational Functions306
- Ch. 4 - Exponential and Logarithmic Functions247
- Ch. 5 - Systems of Equations and Inequalities173
- Ch. 6 - Matrices and Determinants143
- Ch. 7 - Conic Sections124
- Ch. 8 - Sequences, Induction, and Probability251
5장, 문제 43
Use properties of logarithms to condense each logarithmic expression. Write the expression as a single logarithm whose coefficient is 1. Where possible, evaluate logarithmic expressions without using a calculator. ln x + ln 7
검증된 단계별 안내1
Recall the logarithmic property that states the sum of logarithms with the same base can be written as the logarithm of the product: \(\ln a + \ln b = \ln(ab)\).
Identify the terms in the expression: \(\ln x + \ln 7\); here, \(a = x\) and \(b = 7\).
Apply the property by combining the two logarithms into one: \(\ln(x) + \ln(7) = \ln(x \times 7)\).
Simplify the product inside the logarithm: \(\ln(7x)\).
The expression is now condensed into a single logarithm with coefficient 1: \(\ln(7x)\).
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주요 개념
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Properties of Logarithms
Properties of logarithms include rules such as the product, quotient, and power rules. These allow combining or breaking down logarithmic expressions. For example, the product rule states that ln(a) + ln(b) = ln(ab), which helps condense sums of logarithms into a single logarithm.
추천 영상:
5:36
Change of Base Property
Natural Logarithm (ln)
The natural logarithm, denoted ln, is the logarithm with base e, where e ≈ 2.718. It is commonly used in calculus and algebra. Understanding ln is essential for manipulating expressions involving exponential growth or decay and applying logarithmic properties correctly.
추천 영상:
2:51The Natural Log
Condensing Logarithmic Expressions
Condensing logarithmic expressions means rewriting multiple logarithms as a single logarithm with a coefficient of 1. This involves applying logarithm properties to combine terms and simplify the expression, making it easier to evaluate or use in further calculations.
추천 영상:
4:22Expand & Condense Log Expressions
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