/*! This file is auto-generated */ .wp-block-button__link{color:#fff;background-color:#32373c;border-radius:9999px;box-shadow:none;text-decoration:none;padding:calc(.667em + 2px) calc(1.333em + 2px);font-size:1.125em}.wp-block-file__button{background:#32373c;color:#fff;text-decoration:none} Problem 83 Let \(\log _{b} 2=A\) and \(\log... [FREE SOLUTION] | 91Ó°ÊÓ

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Let \(\log _{b} 2=A\) and \(\log _{b} 3=C .\) Write each expression in terms of \(A\) and \(C\). $$\log _{b} \frac{3}{2}$$

Short Answer

Expert verified
The expression \( \log _{b} \frac{3}{2} \) is equal to \(C - A\).

Step by step solution

01

Identify Given Constants

It's given that \( \log _{b} 2=A \) and \( \log _{b} 3=C \).
02

Apply Logarithmic Laws

We must remember the logarithmic law: \( \log_b (m/n) = \log_b m - \log_b n \). We can apply this law to \( \log _{b} \frac{3}{2} \) to get \( \log _{b} 3 - \log _{b} 2 \).
03

Substitute Constants

We can substitute \( \log _{b} 2 \) and \( \log _{b} 3 \) with \(A\) and \(C\) respectively. Then the expression \( \log _{b} \frac{3}{2} \) becomes \(C - A\).

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Key Concepts

These are the key concepts you need to understand to accurately answer the question.

Logarithmic Laws
Understanding logarithmic laws is essential for simplifying logarithmic expressions and solving logarithm-related problems. One of the basic laws is the quotient rule, which states that the logarithm of a quotient is equal to the difference of the logarithms of the numerator and denominator. In mathematical terms, this is expressed as \( \log_b\left(\frac{m}{n}\right) = \log_b(m) - \log_b(n) \).

In the given exercise, this law is applied to simplify \( \log_b\left(\frac{3}{2}\right) \) into \( \log_b(3) - \log_b(2) \). This is a direct application of the quotient rule and is crucial for understanding how to manipulate and simplify expressions containing logarithms.
Properties of Logarithms
Logarithms have several properties that allow us to manipulate and combine them in various ways. One of these properties is that logarithms can be rewritten using constants, as shown in the original exercise. Another important property is that the logarithm of a product is the sum of the logarithms of its factors (product rule): \( \log_b(mn) = \log_b(m) + \log_b(n) \). Similarly, the logarithm of a power is the power multiplied by the logarithm of the base (power rule): \( \log_b(m^n) = n \cdot \log_b(m) \).

When faced with more complicated expressions, these properties become invaluable tools for simplification. They enable us to break down complex logarithmic expressions into more manageable parts, often involving constants like \(A\) and \(C\) as in the given example.
Logarithm Simplification
Logarithm simplification is the process of reducing a logarithmic expression to its simplest form using logarithmic laws and properties. The steps in the solution illustrate how to simplify \( \log_b\left(\frac{3}{2}\right) \) by recognizing the given constants \(A\) and \(C\), and then applying the quotient rule of logarithms. Once the law is applied, the expression simplifies to \(C - A\), a cleaner expression that can easily be utilized in further calculations or equations.

It is also important to note that simplification often involves looking for opportunities to combine or cancel terms, further demonstrating the integral role that understanding the properties of logarithms plays in mathematics. Exercises like this one show how essential these properties are for students to master, as they are applicable in a wide range of mathematical contexts.

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Most popular questions from this chapter

The exponential growth models describe the population of the indicated country, \(A\), in millions, \(t\) years after 2006 $$\begin{array{l}\mathrm{Camada}\quadA=33.1e^{0.009\mathrm{t}}\\\\\mathrm{U}_{\mathrm{ganda}}\quad A=28.2 e^{0.034 t}\end{array}$$ In Exercises \(81-84,\) use this information to determine whether each statement is true or false. If the statement is false, make the necessary change(s) to produce a true statement. The models indicate that in \(2013,\) Uganda's population will exceed Canada's.

The formula \(A=25.1 e^{0.0187 t}\) models the population of Texas, \(A\), in millions, \(t\) years after 2010 . a. What was the population of Texas in \(2010 ?\) b. When will the population of Texas reach 28 million?

Each group member should consult an almanac, newspaper, magazine, or the Internet to find data that can be modeled by exponential or logarithmic functions. Group members should select the two sets of data that are most interesting and relevant. For each set selected, find a model that best fits the data. Each group member should make one prediction based on the model and then discuss a consequence of this prediction. What factors might change the accuracy of the prediction?

Will help you prepare for the material covered in the next section. What problem do you encounter when using the switchand-solve strategy to find the inverse of \(f(x)=2^{x} ?\)

Solve each equation in Exercises \(146-148 .\) Check each proposed solution by direct substitution or with a graphing utility. $$(\log x)(2 \log x+1)=6$$

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