/*! 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 68 Simplify the expression. $$ ... [FREE SOLUTION] | 91Ó°ÊÓ

91Ó°ÊÓ

Simplify the expression. $$ \log _{\pi} 1 $$

Short Answer

Expert verified
The expression simplifies to 0.

Step by step solution

01

Understand the Logarithm Property

Recall the logarithm property which states that for any base 'b', \( \log_b(1) = 0 \) because any number raised to the power of 0 is 1.
02

Apply the Property

In the given expression, \( \log_{\pi}(1) \), the base is \pi\ and we are finding the log of 1. Using the log property from Step 1, we can directly state that \( \log_{\pi}(1) = 0\).

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Key Concepts

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

Logarithm Properties
Understanding logarithm properties is crucial for simplifying logarithmic expressions. One fundamental property states that for any base \( b \), \( \log_b(1) = 0 \). This is because any number raised to the power of 0 is 1.

This property is valid regardless of whether the base is a natural number, irrational number, or anything else. It's a universal truth in the world of logarithms. Let's break it down further:

- When you see \( \log_b(1) \), you can instantly know it equals 0.
- This is because \( b^0 = 1 \), and log is the inverse operation to exponentiation.
Understanding and remembering this property will greatly help in recognizing and simplifying logarithmic expressions efficiently.
Base of Logarithm
In logarithmic expressions, the base is a critical part of the function. The logarithmic base (denoted as \( b \) in \(\logb(x) \)) defines what number is being repeatedly multiplied to reach the argument \( x \).

In the expression \( \log_{\pi}(1) \), the base is \( \pi \), which is approximately 3.14159. However, the specific value of the base doesn’t matter when the argument is 1 because of the previously mentioned property: \( \log_b(1) = 0 \). Thus, whether the base is \( \pi \), 2, 10, or any other number, the result will always be 0 if you're taking the logarithm of 1.

Understanding this can help in quickly evaluating logarithmic expressions, saving time and reducing errors.
Simplifying Logarithmic Expressions
Simplifying logarithmic expressions involves applying the correct properties and understanding the bases involved. As in the given example \( \log_{\pi}(1) \), we start by identifying known properties:

- Use the property \( \log_b(1) = 0 \) since the argument is 1.
- Recognize the base (in this case \( \pi \)) but understand it doesn’t affect the outcome because of the property mentioned above.
Applying this knowledge directly to our example, we quickly find that \( \log_{\pi}(1) = 0 \), simplifying the expression effectively.

Other common simplifications involve using properties like the product rule \( \log_b(XY) = \log_b(X) + \log_b(Y) \), the quotient rule \( \log_b(\frac{X}{Y}) = \log_b(X) - \log_b(Y) \), and the power rule \( \log_b(X^k) = k\log_b(X) \). Getting familiar with these properties allows you to tackle a wide range of logarithmic expressions smoothly.

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Most popular questions from this chapter

Refer to the model \(Q(t)=Q_{0} e^{-0.000121 t}\) used in Example 5 for radiocarbon dating. At the "Marmes Man" archeological site in southeastern Washington State, scientist uncovered the oldest human remains yet to be found in Washington State. A sample from a human bone taken from the site showed that \(29.4 \%\) of the carbon-14 still remained. How old is the sample? Round to the nearest year.

A function of the form \(P(t)=a b^{t}\) represents the population of the given country \(t\) years after January 1,2000 . a. Write an equivalent function using base \(e\); that is, write a function of the form \(P(t)=P_{0} e^{k t} .\) Also, determine the population of each country for the year 2000 . $$\begin{array}{|l|c|c|c|} \hline \text { Country } & P(t)=a b^{t} & P(t)=P_{0} e^{k t} & \begin{array}{c} \text { Population } \\ \text { in } 2000 \end{array} \\ \hline \text { Haiti } & P(t)=8.5(1.0158)^{t} & & \\ \hline \text { Sweden } & P(t)=9.0(1.0048)^{t} & & \\ \hline \end{array}$$ b. The population of the two given countries is very close for the year 2000 , but their growth rates are different. Determine the year during which the population of each country will reach 10.5 million. c. Haiti had fewer people in the year 2000 than Sweden. Why did Haiti reach a population of 10.5 million sooner?

Graph the following functions on the window [-3,3,1] by [-1,8,1] and comment on the behavior of the graphs near $$ \begin{array}{l} x=0 \\ \mathrm{Y}_{1}=e^{x} \\ \mathrm{Y}_{2}=1+x+\frac{x^{2}}{2} \\ \mathrm{Y}_{3}=1+x+\frac{x^{2}}{2}+\frac{x^{3}}{6} \end{array} $$

(See Example 8 ) a. Estimate the value of the logarithm between two consecutive integers. For example, \(\log _{2} 7\) is between 2 and 3 because \(2^{2}<7<2^{3}\). b. Use the change-of-base formula and a calculator to approximate the logarithm to 4 decimal places. c. Check the result by using the related exponential form. $$ \log _{5} 3 $$

If \(k>0,\) the equation \(y=y_{0} e^{k t}\) is a model for exponential (growth/decay), whereas if \(k<0,\) the equation is a model for exponential (growth/decay).

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