Chapter 12: Problem 21
Write each as a logarithmic equation. $$ e^{3}=x $$
Short Answer
Expert verified
\( \ln(x) = 3 \)
Step by step solution
01
Identify the Exponentiation Base
The given equation is in the form of an exponential equation, which is \( e^3 = x \). The base of the exponent here is \( e \).
02
Translate to Logarithmic Form
Any exponential equation of form \( b^y = x \) can be converted into logarithmic form as \( \log_b(x) = y \). Here, \( b \) is \( e \), \( y \) is \( 3 \), and \( x \) is \( x \).
03
Write the Logarithmic Equation
Knowing from Step 2, the corresponding logarithmic form for \( e^3 = x \) is \( \log_e(x) = 3 \), which can also be written as \( \ln(x) = 3 \) since \( \log_e \) is commonly represented as \( \ln \).
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Key Concepts
These are the key concepts you need to understand to accurately answer the question.
Understanding Exponential Equations
Exponential equations are mathematical expressions where a variable appears in the exponent. These equations are usually of the form \( b^y = x \), where \( b \) is the base, \( y \) is the exponent, and \( x \) is the result. They are widely used in real-world applications such as compound interest calculations, population growth models, and radioactive decay. To solve these equations, it helps to understand the relationship between exponential and logarithmic forms.
Here's a simple breakdown of their conversion:
Here's a simple breakdown of their conversion:
- Identify the base of the exponential equation. It is vital because it will be used to rewrite the equation in logarithmic form.
- Express the equation in the form \( b^y = x \).
- Convert the equation using logarithms, which are the inverse operations of exponentials.
Demystifying Natural Logarithms
Natural logarithms are a specific type of logarithmic operation that uses the base \( e \). The number \( e \) is approximately 2.718 and is a transcendental and irrational number often used in calculus and higher mathematics.
When you encounter natural logarithms, they are written as \( \ln(x) \), which stands for \( \log_e(x) \). This notation simplifies expressions and calculations involving the constant \( e \) because it shows the relationship between the natural growth processes and the exponential functions.
For example, the exponential equation \( e^3 = x \) in natural logarithmic form is written as \( \ln(x) = 3 \). This conversion helps simplify the process of solving for \( x \) by allowing us to use properties of logarithms.
When you encounter natural logarithms, they are written as \( \ln(x) \), which stands for \( \log_e(x) \). This notation simplifies expressions and calculations involving the constant \( e \) because it shows the relationship between the natural growth processes and the exponential functions.
For example, the exponential equation \( e^3 = x \) in natural logarithmic form is written as \( \ln(x) = 3 \). This conversion helps simplify the process of solving for \( x \) by allowing us to use properties of logarithms.
Exploring the Base of Exponent
The base of exponent is a crucial component within exponential expressions. It influences the rate at which the exponential function grows or decays.
In the equation \( e^3 = x \), the base is \( e \). This base, \( e \), is especially important in mathematical studies because it naturally occurs in various growth and decay processes. Commonly seen in financial calculations, biological processes, and many scientific fields, \( e \) serves as a foundation for understanding continuous growth phenomena.
In the equation \( e^3 = x \), the base is \( e \). This base, \( e \), is especially important in mathematical studies because it naturally occurs in various growth and decay processes. Commonly seen in financial calculations, biological processes, and many scientific fields, \( e \) serves as a foundation for understanding continuous growth phenomena.
- Natural bases like \( e \) are often used in situations where growth is continuous.
- Changing the base of an exponential equation alters how quickly the function grows or diminishes.