Chapter 6: Problem 14
For each statement, write an equivalent statement in exponential form. Do not use a calculator. $$\log _{3} \sqrt[3]{9}=\frac{2}{3}$$
Short Answer
Expert verified
\( 3^{\frac{2}{3}} = \sqrt[3]{9} \)
Step by step solution
01
Identify the Logarithmic Equation
The given equation is \( \log_{3} \sqrt[3]{9} = \frac{2}{3} \). This equation is expressed in logarithmic form and represents a relationship between base 3, the argument \( \sqrt[3]{9} \), and the result \( \frac{2}{3} \).
02
Convert the Logarithmic Form to Exponential Form
The general formula to convert a logarithmic equation \( \log_b(a) = c \) to exponential form is \( b^c = a \). Applying this to our given equation, we replace \( b \) with 3, \( a \) with \( \sqrt[3]{9} \), and \( c \) with \( \frac{2}{3} \).
03
Write the Exponential Form
Utilizing the conversion, the exponential form of the equation is \( 3^{\frac{2}{3}} = \sqrt[3]{9} \). This illustrates that raising the base 3 to the power of \( \frac{2}{3} \) yields the cube root of 9.
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.
Logarithmic Form
Logarithmic form is a mathematical notation that is essentially the reverse of exponential notation. When you see an equation like \( \log_b(a) = c \), this means that \( b^c = a \). The base \( b \) is raised to the power of \( c \) to result in \( a \). This form is incredibly useful for solving equations where the unknown is an exponent. By transforming such problems into logarithmic form, they become more manageable.
A real-world analogy could be thinking of logarithms as undoing exponentiation, much like division undoes multiplication. When you encounter logarithms:
A real-world analogy could be thinking of logarithms as undoing exponentiation, much like division undoes multiplication. When you encounter logarithms:
- The base \( b \) represents the number being raised to a power.
- The argument or result \( a \) is the number you end up with after raising the base \( b \) to the power \( c \).
- The exponent \( c \) shows how many times we use the base in multiplication to reach the argument \( a \).
Base and Exponent
The base and exponent are fundamental concepts in both exponential and logarithmic expressions. The base, often seen in expressions like \( b^c \), is the number that is multipled by itself a certain number of times. The exponent \( c \) determines how many times we multiply the base by itself.
In exponential form, \( b^c = a \):
In exponential form, \( b^c = a \):
- \( b \) is the base
- \( c \) is the exponent
- \( a \) is the result of the base raised to the exponent
- The base is 3. This is the number being repeatedly multiplied.
- The exponent is \( \frac{2}{3} \). This specific fraction signifies not just multiplication but also roots, indicating a more complex operation.
- The result is \( \sqrt[3]{9} \), which is equivalent to 3 being raised to the power of \( \frac{2}{3} \).
Cube Root
The cube root of a number \( a \) is a special type of root that represents a number which, when multiplied by itself three times, equals \( a \). It is written as \( \sqrt[3]{a} \). For example, the cube root of 8 is 2 because \( 2 \times 2 \times 2 = 8 \).
Cube roots are particularly interesting because they introduce a third dimension to the multiplication process, not unlike wrapping an object to fit into a cube. This operation is important in various fields, including geometry and physics, where volumetric calculations are frequent.
In our exercise, \( \sqrt[3]{9} \) represents a cube root. The expression \( 3^{\frac{2}{3}} = \sqrt[3]{9} \) implies converting a power notation into a root. The fractional exponent \( \frac{2}{3} \) signifies that we first find the cube root of 9, then raise it to the power of 2. It is a flexible and useful way to express numbers undergoing these calculations.
Cube roots are particularly interesting because they introduce a third dimension to the multiplication process, not unlike wrapping an object to fit into a cube. This operation is important in various fields, including geometry and physics, where volumetric calculations are frequent.
In our exercise, \( \sqrt[3]{9} \) represents a cube root. The expression \( 3^{\frac{2}{3}} = \sqrt[3]{9} \) implies converting a power notation into a root. The fractional exponent \( \frac{2}{3} \) signifies that we first find the cube root of 9, then raise it to the power of 2. It is a flexible and useful way to express numbers undergoing these calculations.