Chapter 10: Problem 79
Express each of the following as the sum or difference of simpler logarithmic quantities. Assume that all variables represent positive real numbers. For example, $$ \begin{aligned} \log _{b} \frac{x^{3}}{y^{2}} &=\log _{b} x^{3}-\log _{b} y^{2} \\ &=3 \log _{b} x-2 \log _{b} y \end{aligned} $$ $$ \log _{b}\left(x \sqrt{\frac{x}{y}}\right) $$
Short Answer
Step by step solution
Identify the logarithmic expression
Apply the property of logarithms for products
Express the square root as a power
Use the power rule for logarithms
Simplify using the quotient rule for logarithms
Combine the results
Unlock Step-by-Step Solutions & Ace Your Exams!
-
Full Textbook Solutions
Get detailed explanations and key concepts
-
Unlimited Al creation
Al flashcards, explanations, exams and more...
-
Ads-free access
To over 500 millions flashcards
-
Money-back guarantee
We refund you if you fail your exam.
Over 30 million students worldwide already upgrade their learning with 91Ó°ÊÓ!
Key Concepts
These are the key concepts you need to understand to accurately answer the question.
Logarithm Properties
- The **product rule** states that the logarithm of a product is equal to the sum of the logarithms of its factors: \( \log_b(mn) = \log_b m + \log_b n \).
- The **quotient rule** provides that the logarithm of a quotient is equal to the difference between the logarithms of the numerator and the denominator: \( \log_b \frac{m}{n} = \log_b m - \log_b n \).
- The **power rule** tells us that the logarithm of a number raised to a power is equal to the power multiplied by the logarithm of the number: \( \log_b (m^n) = n \log_b m \).
Logarithmic Simplification
Logarithmic Rules
- The **base** of the logarithm should remain consistent throughout your calculations. Changing the base requires specific transformations, like the change of base formula.
- The **order** of operations matters; be attentive to the use of parentheses to ensure accurate simplification.
- Always keep variables within the logarithmic expressions positive real numbers, as logarithms of non-positive numbers are not defined in the realm of real numbers.