Stacey S
March 7, 2003
Algebra II
Ms. Blackwell
4.1 Introduction to Matrices
Matrix- a rectangular array of variable or constants in horizontal rows and vertical columns, usually enclosed in brackets.
Element- each value in the matrix
Example
[4x] = [y]
[4x+8y] = [72]
Step 1: 4x + 8y=72
Step 2: 4x + 8(4x)=72 :You have to replace the y with 4x
Step 3: 4x + 32x = 72 : then you simplify the equation
Step 4: 36x=72 :Combine the like terms and divide each side by 36
Answer: x = 2
Good Judgment
"If you plan to make it in this world you must use good judgment and make good decisions throughout your life"
Other Websites: http://www.sosmath.com/matrix/matrix.html