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Kasturi Talukdar

Updated on 06th April, 2023 , 7 min read

Log 3 Value: Definition, Value in Common and Natural Value, Examples and Application

Log 3 Value Overview

In mathematics, logarithms are an essential concept used to solve various problems, including those in science, engineering, and finance. The logarithm of a number is the exponent to which a base must be raised to obtain that number. In this article, we will discuss the value of log 3, which is the logarithm of the number 3. We will explain the value of log 3 in both the common log and natural log and its applications in different fields.

What is Logarithm?

The logarithm is a mathematical function that describes the relationship between two numbers, known as the base and the argument. The logarithm of a number is the power to which the base must be raised to obtain the argument. Logarithms are used to solve exponential equations and have various applications in science, engineering, finance, and other fields.

Understanding the Log 3 Value

Logarithms are mathematical functions that describe the relationship between two quantities by comparing their relative sizes. Specifically, the logarithm of a number represents the exponent to which a base must be raised to produce that number.

In the case of log 3, we are dealing with a base 10 logarithm. This means that we are looking for the power to which 10 must be raised to produce the value of 3. Mathematically, we can express this relationship as:

10^log 3 = 3

Using algebraic manipulation, we can solve for the value of log 3:

log 3 = log(10^log 3) = log 10 / log 3

The value of log 10 is 1 since 10 is raised to any power itself. Therefore, we can simplify the equation to:

log 3 = 1 / log 3

This equation can be solved using basic algebraic techniques. By multiplying both sides of the equation by log 3, we obtain:

(log 3)^2 = 1

Taking the square root of both sides gives us:

log 3 = ±1

However, we know that log 3 must be a positive value since logarithms of negative numbers are undefined in the real number system. Therefore, we can conclude that:

log 3 = 0.47712125472...

This value is an approximation since the decimal expansion of log 3 goes on infinitely without repeating. However, for most practical purposes, the first few decimal places of log 3 are sufficient.

In summary, the value of log 3 represents the exponent to which a base 10 must be raised to produce the value of 3. It is approximately 0.47712125472 and is commonly used in mathematical and scientific calculations.

Log 3 Value in Common Log

The log 3 value in the common log refers to the logarithm of the number 3 with a base of 10. The common log is a logarithmic function that uses the base of 10. The value of log 3 in the common log is approximately equal to 0.47712125, and it is a real number that lies between 0 and 1.

To calculate the value of log 3 in the common log, we use the logarithmic formula. The logarithmic formula is:

Log b(x) = y

Where,

x is the number whose logarithm is to be found, b is the base, and y is the logarithm of x with base b.

In the case of log 3 in the common log, x is 3, b is 10, and y is the value of log 3 in the common log. So, we have:

Log 10(3) = y

Taking antilogarithm on both sides, we get:

10^y = 3

Taking the logarithm of both sides with a base of 10, we get:

Log 10(10^y) = log 10(3)

Using the logarithmic rule, we get:

y log10(10) = log10(3)

As log 10(10) = 1, we get:

y = log 10(3)

Using a calculator, we can evaluate the value of log 10(3) as approximately 0.47712125.

In conclusion, the value of log 3 in the common log refers to the logarithm of 3 with a base of 10. It is a real number that lies between 0 and 1 and is approximately equal to 0.47712125. The value of log 3 in the common log has various applications in different fields of mathematics, science, engineering, and finance.

Log 3 Value in Natural Log

The value of log 3 in the natural log refers to the logarithm of the number 3 with a base of e, which is approximately equal to 2.71828. The natural log, also known as the logarithm to the base e, is a logarithmic function that uses e as its base. The value of log 3 in the natural log is a real number that lies between 1 and 2, and it is approximately equal to 1.09861.

To calculate the value of log 3 in the natural log, we use the logarithmic formula. The logarithmic formula is:

Log b(x) = y

Where,

x is the number whose logarithm is to be found, b is the base, and y is the logarithm of x with base b.

In the case of log 3 in the natural log, x is 3, b is e, and y is the value of log 3 in the natural log. So, we have:

Log e (3) = y

Using a calculator, we can evaluate the value of log e (3) as approximately 1.09861.

In conclusion, the value of log 3 in natural log refers to the logarithm of 3 with a base of e, which is approximately equal to 2.71828. It is a real number that lies between 1 and 2 and is approximately equal to 1.09861. The value of log 3 in natural log has various applications in different fields of mathematics, science, engineering, and finance.

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How to find Log 3 Value

There are different ways to find the value of log 3, depending on the tools or methods available. Here are a few options:

  1. Using a calculator: Most scientific or graphing calculators have a built-in logarithm function that can be used to calculate the value of log 3. Simply enter "log (3)" or "log10(3)" (depending on the calculator) and press the equals button to obtain the result.
  2. Using a table of logarithms: In the past, logarithm tables were commonly used to find the logarithm of a number. These tables list the values of logarithms for a range of numbers, typically with a given precision (such as four decimal places). To find log 3 using a logarithm table, locate the row for 3 and the column for the desired precision, and read the corresponding value.
  3. Using the change of base formula: If a calculator or table of logarithms is not available, the value of log 3 can be approximated using the change of base formula, which states that log a (b) = log c (b) / log c (a) for any bases a, b, and c. To find log 3 using base 10 logarithms, we can rewrite it as log 3 = log10 (3) / log10 (10), where log10 (10) is equal to 1. Then, we can use a calculator or table of logarithms to find log10 (3), and divide the result by 1 to obtain the value of log 3.

For example, using the change of base formula with log10 (3) ≈ 0.4771213 (rounded to seven decimal places), we get:

log 3 ≈ log10 (3) / log10 (10) ≈ 0.4771213 / 1 ≈ 0.4771213

Therefore, the value of log 3 (approximated to seven decimal places) is about 0.4771213.

Applications of Log 3

Logarithms, including log 3, have a wide range of applications in various fields, including mathematics, science, engineering, economics, and finance. Here are a few examples:

  1. Measuring the pH of a solution: The pH scale measures the acidity or basicity of a solution. The pH value is calculated using the negative logarithm of the hydrogen ion concentration (pH = -log [H+]). By using logarithms, the pH scale can accommodate a wide range of hydrogen ion concentrations, from highly acidic solutions with low pH values to highly basic solutions with high pH values.
  2. Calculating earthquake intensity: The Richter scale is a logarithmic scale used to measure the intensity of earthquakes. Each increase of one unit on the Richter scale corresponds to a tenfold increase in the amplitude of the seismic waves. For example, an earthquake with a magnitude of 7.0 is ten times more intense than an earthquake with a magnitude of 6.0.
  3. Analysing exponential growth and decay: Many natural phenomena, such as population growth, radioactive decay, and the spread of infectious diseases, exhibit exponential growth or decay. Logarithms can be used to analyse these processes and make predictions about future trends.
  4. Computing interest and compound growth: Logarithms are also used in finance to calculate interest and compound growth. For example, the future value of an investment with compound interest can be calculated using the formula FV = PV x (1 + r/n)^(n*t), where FV is the future value, PV is the present value, r is the annual interest rate, n is the number of times the interest is compounded per year, and t is the time period in years. By taking logarithms, this formula can be simplified and used to calculate the interest rate, the number of compounding periods, or the time period.

Things to Remember: Log 3 Value

  1. The value of log 3 is approximately 0.4771213 (rounded to seven decimal places), assuming a base 10 logarithm. This means that 10 raised to the power of 0.4771213 is approximately equal to 3.
  2. Log 3 is a positive number since 3 is a positive number. In general, the logarithm of a positive number is a positive number, while the logarithm of a negative number is a complex number.
  3. Logarithms have certain properties that can be useful for calculations or simplifications, such as the product rule (log a (b * c) = log a (b) + log a (c)), the quotient rule (log a (b / c) = log a (b) - log a (c)), and the power rule (log a (b^n) = n * log a (b)). These rules can be applied to log 3 as well.
  4. The value of log 3 is often used in calculations related to exponential growth or decay, as well as in fields such as physics, chemistry, engineering, and finance.
  5. It's important to keep in mind the base of the logarithm being used, as different bases can give different values for the same number. For example, the value of log 3 with a base 2 logarithm is approximately 1.585, while the value of log 3 with a natural logarithm (base e) is approximately 1.0986.

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Frequently Asked Questions

The logarithm of 3 to base 10 is approximately 0.477.

The logarithm of 3 to base e is approximately 1.099.

The logarithm of 3 can be calculated using a logarithm table or a scientific calculator.

The antilog of log 3 is 10^3, which is 1000.

The common logarithm of 1000 is 3.

Log 3 + log 4 can be simplified using the product rule of logarithms as log 3*4, which equals log 12.

The inverse of the logarithm of 3 to base 10 is 10^0.477, which is approximately 2.997.

Logarithms are the inverse function of exponents, meaning that they allow you to solve for the exponent when given a base and a number raised to that exponent.

Equations involving logarithms can be solved by manipulating the logarithmic expressions using logarithmic rules and algebraic techniques.

Logarithms are commonly used in fields such as finance, engineering, and science to represent data that spans several orders of magnitude, such as the pH scale, earthquake magnitudes, and sound intensity levels.

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