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8.2 Matrices
Objective: Perform basic operations with matrices
Standard: Linear Algebra 4.0 and 5.0
What's a Matrix?
Matrix Addition
Ex. 1)
Ex. 2)
Scalar Multiplication
Ex. 3)
Ex. 4)
Matrix Multiplication
The sum of the products of rows and columns
Note: The columns in the first matrix must match the rows in the second matrix. Example:
Ex. 5)
Order Matters!!
The Identity Matrix
Basically, 1s on the diagonal
Assignment:
#11 p. 597#3, 6-8, 15, 23, 28-30, 41, 43
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