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Convert to logarithmic form. $$7^{3}=343$$

Short Answer

Expert verified
\(\log_7(343)=3\)

Step by step solution

01

Understanding the Exponential Equation

The given exponential equation is of the form \(a^{b}=c\). Your task is to convert it into logarithmic form, which follows the pattern \(\log_a(c)=b\), where base \(a\) exponentiates to \(b\) to give \(c\).
02

Identify the Base, Exponent, and Result

In the given equation \(7^{3}=343\), identify the base (\(a\)), which is 7, the exponent (\(b\)), which is 3, and the result (\(c\)), which is 343.
03

Convert to Logarithmic Form

Using the pattern \(\log_a(c)=b\), plug the identified values into the logarithmic form. This gives us \(\log_7(343)=3\).

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Key Concepts

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

Converting Exponential Equations to Logarithmic Form
Converting an exponential equation to logarithmic form is a foundational skill in mathematics. An exponential equation is one where a number, known as the base, is raised to a power, which is the exponent, to yield a certain result. For instance, in the equation \(7^{3}=343\), 7 is the base, 3 is the exponent, and 343 is the result.

To transform this into logarithmic form, one must understand the inverse relationship between exponents and logarithms. The logarithmic form basically answers the question: to what exponent must the base (in this case, 7) be raised to produce 343? Thus, the exponential equation \(7^{3}=343\) becomes \(\log_7(343)=3\) in logarithmic form, showing that 7 raised to the power of 3 equals 343.
Logarithm Properties
Logarithms have unique properties which make working with them easier, especially when solving exponential equations. These properties are based on foundational arithmetic rules.
  • The Product Rule: \(\log_a(mn) = \log_a(m) + \log_a(n)\), which states that the log of a product is the sum of the logs.
  • The Quotient Rule: \(\log_a\left(\frac{m}{n}\right) = \log_a(m) - \log_a(n)\), which shows that the log of a quotient is the difference between the logs.
  • The Power Rule: \(\log_a(m^n) = n\log_a(m)\), suggesting that the log of a number raised to an exponent is that exponent times the log.
Understanding these properties helps greatly when converting between exponential and logarithmic forms or simplifying logarithmic expressions.
Understanding Exponential Equations
Exponential equations are important in various fields such as finance, biology, and physics, as they can describe growth or decay processes. To understand these equations, it's crucial to recognize the components: the base, the exponent, and the result, which we can denote as \(a^b=c\). The base (\(a\)) and the result (\(c\)) are the known quantities, and the exponent (\(b\)) is the power the base is raised to.

For instance, if we consider compound interest in finance, the amount is calculated using an exponential equation where the base is the growth rate plus one, the exponent is the number of compounding periods, and the result is the final amount. Understanding how to manipulate these equations is key to solving many real-world problems.
Base of Logarithm
The base of a logarithm is the number that is raised to a certain power to generate a given result, and it corresponds to the base in the equivalent exponential form. For example, in the logarithmic expression \(\log_7(343)=3\), the base is 7 – the same base as in the exponential form \(7^{3}=343\). It’s important to match the base correctly when converting between forms because the base determines the rate at which values increase in the exponential form and how they will be interpreted logarithmically.

The choice of base can also be tailored to specific situations: for example, base 10 is commonly used in scientific applications, whereas base \(e\), known as Euler's number, is used in continuous growth or decay models like in natural logarithms. Understanding the role of the base helps in solving equations and in applying logarithms to real-world situations.

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