Introduction
Multiplication is a familiar concept for everyone. The main idea of multiplication is to shorten addition of the same number. It is much easier to read in a form Powers are used to shorten multiplication:
So, power is an abbreviated notation for the multiplication of a number with itself:
where a is base and n is exponent.
Example 1. In , 7 is the base and 9 is the exponent.
If the exponent is two, then often we talk about the square of the number. If the exponent is three, then we are talking about the cube of a number.
Check your calculator to see how the power can be calculated. Some may have or others For example, use the familiar to study how to use the key correctly. Again, this varies by calculator.