/*! 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 10 Use properties of logarithms to ... [FREE SOLUTION] | 91Ó°ÊÓ

91Ó°ÊÓ

Use properties of logarithms to expand each logarithmic expression as much as possible. Where possible,evaluate logarithmic expressions without using a calculator. $$\log \left(\frac{x}{1000}\right)$$

Short Answer

Expert verified
\(\log \left(\frac{x}{1000}\right) = \log(x) - 3 \)

Step by step solution

01

Apply the Quotient Rule

Start by applying the quotient rule, which states that \( \log(a / b) = \log(a) - \log(b) \). This gives: \( \log \left(\frac{x}{1000}\right) = \log(x) - \log(1000) \).
02

Evaluate the Logarithm that can be Simplified

Evaluate \( \log(1000) \) as it's a simple logarithm that can be resolved without the need of a calculator. Remember, in base 10, \( \log(1000) = 3 \) since \( 10^3 = 1000 \). Substituting this result back into the expression from Step 1 gives: \( \log(x) - 3 \).

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.

Properties of Logarithms
Logarithms have several key properties that make complex logarithmic expressions easier to handle and simplify. Understanding these properties is vital when working with logarithmic equations or expressions.
  • Product Rule: This states that the logarithm of a product is the sum of the logarithms of the factors. Mathematically expressed as \( \log(ab) = \log(a) + \log(b) \).
  • Quotient Rule: According to this rule, the logarithm of a quotient is the difference of the logarithms. It is expressed as \( \log(a/b) = \log(a) - \log(b) \).
  • Power Rule: When you have a logarithm of a power, you can bring the exponent to the front, expressed as \( \log(a^b) = b\log(a) \).
Utilizing these properties effectively can help simplicity almost any logarithmic operation, allowing for easier computation and understanding of logarithmic expressions. Handling expressions by applying these rules helps in breaking them down into simpler parts.
By mastering these properties, solving expressions like \( \log \left(\frac{x}{1000}\right) \) becomes straightforward as we can break it into more manageable parts.
Quotient Rule
The Quotient Rule is one of the fundamental properties of logarithms used for simplifying logarithmic expressions containing division inside the log function. This rule states that when you have a quotient inside a logarithm, you can rewrite it as the difference between two logarithms.
  • The rule is expressed as: \( \log \left( \frac{a}{b} \right) = \log(a) - \log(b) \)
This can be very useful in problems where you need to separate logarithms to make calculations easier or to further simplify expressions into basic components. For example, with the expression \( \log \left( \frac{x}{1000} \right) \), using the quotient rule lets us rewrite it into two separate logs: \( \log(x) - \log(1000) \).
This separation helps identify parts of the logarithm that may be simplified further or easily computed. Recognizing when to apply the quotient rule can be an insightful shortcut and strategy for efficiently dealing with logarithmic questions.
Logarithm of a Quotient
Applying logarithmic properties to quotients particularly focuses on transforming the expression into separate, simpler terms. Once you have applied the quotient rule, each resulting logarithmic term can be approached separately to allow for further simplification.
Using the earlier steps, \( \log \left( \frac{x}{1000} \right) \) translates to \( \log(x) - \log(1000) \).
  • Consider \( \log(1000) \). In base 10, this is equivalent to \( \log(10^3) \), which simplifies to 3 using the power rule, since \( 10^3 = 1000 \).
  • This leaves us with a more approachable form like \( \log(x) - 3 \), making complex expressions much easier to handle.
Breaking down expressions in this way is a valuable method for solving logarithmic problems, whether in theoretical math or practical applications. By fully understanding the properties of a logarithm, particularly when dealing with quotients, one can significantly streamline the problem-solving process.

One App. One Place for Learning.

All the tools & learning materials you need for study success - in one app.

Get started for free

Most popular questions from this chapter

By 2019 , nearly 1 dollar out of every 5 dollars spent in the U.S. economy is projected to go for health care. The bar graph shows the percentage of the U.S. gross domestic product (GDP) going toward health care from 2007 through 2014 , with a projection for 2019.(GRAPH CAN'T COPY). The data can be modeled by the function \(f(x)=1.2 \ln x+15.7\) where \(f(x)\) is the percentage of the U.S. gross domestic product going toward health care \(x\) years after \(2006 .\) Use this information to solve. a. Use the function to determine the percentage of the U.S. gross domestic product that went toward health care in \(2008 .\) Round to the nearest tenth of a percent. Does this underestimate or overestimate the percent displayed by the graph? By how much? b. According to the model, when will \(18.6 \%\) of the U.S. gross domestic product go toward health care? Round to the nearest year.

Explain how to use the graph of \(f(x)=2^{x}\) to obtain the graph of \(g(x)=\log _{2} x\)

Without showing the details, explain how to condense \(\ln x-2 \ln (x+1)\)

Hurricanes are one of nature's most destructive forces. These low-pressure areas often have diameters of over 500 miles. The function \(f(x)=0.48 \ln (x+1)+27\) models the barometric air pressure, \(f(x),\) in inches of mercury, at a distance of \(x\) miles from the eye of a hurricane. Use this function to solve. Graph the function in a \([0,500,50]\) by \([27,30,1]\) viewing rectangle. What does the shape of the graph indicate about barometric air pressure as the distance from the eye increases?

Will help you prepare for the material covered in the next section. The formula \(A=10 e^{-0.003 t}\) models the population of Hungary, \(A\), in millions, \(t\) years after 2006 . a. Find Hungary's population, in millions, for \(2006,2007\), \(2008,\) and \(2009 .\) Round to two decimal places. b. Is Hungary's population increasing or decreasing?

See all solutions

Recommended explanations on Math Textbooks

View all explanations

What do you think about this solution?

We value your feedback to improve our textbook solutions.

Study anywhere. Anytime. Across all devices.