Dakota's Scribe Post for Friday(3/28/08)

Today in class we learned about multiplying matrixes. When multiplying you must mutiply first and then add to get the correct answer. For example for problem #! you would multiply 4*20(cars) and 6*25(trucks) and then add them together to get the total number of (w)wheels= 230


Notes:
1. Matrix Multiplication
c t w s g w s g
BE [20 25] * c⎡4 2 1⎤ = BE [230 65 95]
t ⎣6 1 3⎦
(1row byt 2 coulmns) * (2 rows by 3 columns)
w s g
BE[230 65 95]
(1row by 3 columns)

c t w s g
2. BE⎡20 25⎤ c⎡4 2 1⎤ = BE⎡230 65 95⎤
FA⎣13 15⎦ * t⎣6 1 3⎦ FA⎣14241 58⎦

(2rows by 2 columns) * (3rows by 3 columns)