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Wednesday, February 08, 2006 

Scribe

Hey what's going on,

It's Jason, today's going to have a really short scribe entry because we only had one period of math instead of two.

Anyways all we did was work on the questions we got from the text book yesterday or the day before. I can't remember when we were assigned them. ( page 55 questions 1 - 9 for those who forgot)

And for those who finished those questions questions on page 64 were assigned. Were suposted to do questions 1 - 9, but only do the ODD numbered questions. ( 3, 5, 7, and 9)

The last thing we ended up class with was Mr. K started to talk about identity elements, but he said he plans go into greater details about them in a later class. The definition the math dictionary ( is a link on the blog) gives of identity is kind of confusing so I'll just explain the basics of it myself. ( if it makes absolutely no sense check the math dictionary)

A identity element/equation is basically something you do to one number to get the same number. I know its really hard to explain.

Example

-The indentity element for addition is 0. No matter what number you add zero to you get the same number
Ex: 1 + 0 = 1 or 27483 + 0 = 27483

-The indentity element for subtraction is the same as addition, 0.
Ex: 2 - 0 = 2 or 323 - 0 = 323

-The indentity element for multiplication and division is 1.
Ex: 7 x 3 = 21 or 74232 x 1 = 74232
4 /1 = 4 or 637/1 = 637

- The identity element for a square matrix is having nothing but ones going diagonally and zeros in all the other squares.
Ex:

1 0 0
0 1 0
0 0 1

or

1 0
0 1

If you don't get it well probally go over it in class again sometime. The basics of it is very simple.

Well that all we did cya

tomorrows scribe is: Steph




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