Question

Write the expression in exponential form. one to the third power

Short answer

The expression 'one to the third power' in exponential form is 1^3.

Step-by-step solution

Identify the Base and the Exponent

In the expression 'one to the third power', 'one' is the base and 'third' or 3 is the exponent. The base is the number that is being multiplied, and the exponent is the number of times the base is being multiplied.

Write in Exponential Form

Write the base, followed by the caret symbol '^', followed by the exponent. The caret symbol represents the phrase 'to the power of'. In this case, the expression becomes 1^3.

Key concepts

Base and Exponent

Understanding the relationship between a base and an exponent is fundamental to mastering the concept of exponents. The base is the value that is multiplied by itself; imagine it as the building block of the expression. The exponent, also known as the power, indicates how many times the base is used as a factor in the multiplication.

For instance, in the expression '4 to the second power', 4 is the base, and it's used twice as a factor because the exponent is 2. Mathematically, we would write this as \( 4^2 \), which literally means \( 4 \times 4 \). So, when we talk about 'one to the third power', we are referring to the base 1 being used three times in a multiplication.

• Base = 1
• Exponent = 3
• Exponential form = \( 1^3 \)

Writing Exponents

The process of writing exponents involves expressing a repeated multiplication compactly. Instead of writing out the base multiple times, we use an exponent to simplify and convey the process efficiently. Here's how to do it:

First, write the number that you will be using as the base of your multiplication. Next, instead of writing it out multiple times, you use a small raised number to represent how often the base is to be used as a factor; this raised number is your exponent.

For example, \( 5 \times 5 \times 5 \) can be tiresome to read and write, but using exponential notation, we express it as \( 5^3 \). The base, 5, appears only once, and the exponent, 3, tells us it's multiplied by itself three times. Exponents are not just for whole numbers, but they work for any real number, variables, and even complex expressions.

Exponential Notation

The exponential notation is a convenient way to write expressions where a number is multiplied by itself multiple times. It is a compact form that uses a base and an exponent. This notation is especially useful when dealing with very large numbers or very small numbers in scientific notation.

In exponential notation, the expression \( 2^4 \) succinctly communicates that 2 is the base and it should be multiplied by itself 4 times (\( 2 \times 2 \times 2 \times 2 \)) to yield 16. The caret symbol '^' is commonly used to denote that the number following it is the exponent when expressions are written on computers or calculators.

When teaching students the exponential notation, it is essential to highlight that any number, except zero, raised to the power of zero equals one (\( a^0 = 1 \) for any \( a \)). Moreover, any number raised to the power of one is the number itself (\( a^1 = a \)).