Download Index Notation (also known as exponential notation or form)анаa

http://news.nationalpost.com/2011/09/07/911­by­the­numbers­the­victims­and­those­left­
behind/
Sep 9­8:11 AM
1B ­ Index Notation
Index Notation (also known as exponential notation or form) ­ a form of writing identical factors using an exponent (index) and a base.
4
Base
Number
5
Index or Exponent ­ tells you how many factors are multiplied together
This same thing written in factored form is:
5x5x5x5
This same thing written in natural number form is:
625
May 9­1:39 PM
1
EX1) Write in index form and as a natural number: 3x3x4x4x4
EX2) Write as in factored form and as a natural number:
24 x 4 x 52
EX3) Use your calculator to convert into natural number 33 x 42 x 54
form: How do you properly key this in on your TI­84?
May 9­1:49 PM
***Any non­zero number raised to the power of zero is______________!!!
***Why is this? Create a table of y=2x...
x
­4
­3
­2
­1
0
1
2
3
4
Y=2X
What happens as you go from left to right?
What happens as you go from right to left?
Consider:
May 9­1:54 PM
2
Sep 9­8:05 AM
With your groups...consider the following statements. Create an example to justify your conclusion.
A negative base raised to an even power is always _______.
A negative base raised to an odd power is always ________.
A positive base raised to any power is always ________.
EX4) Evaluate:
A.) (­3)4
B.) ­34
C.) ­(­3)4
• What is the difference in the answers from above? • Why are they not always the same?
• Do parenthesis matter when evaluating???
May 9­2:10 PM
3
Sep 9­7:53 AM
4