Algebra 2 Notes
February 24, 2009
1.
2.
Write the dimensions of each matrix:
Use the matrices from #1. Identify each
matrix element (refer to pg 169 example 2
for help):

Add corresponding elements
◦ To add or subtract two matrices they must have the
exact same dimensions

Find each sum:

Find the following difference:


Zero Matrix: A matrix who’s elements are all
zeros.
Examples:
and
Additive Inverses:


Matrix Equation: Equation in which the
variable is a matrix.
Solve for the matrix X!

Solve the following matrix equation for the
matrix X:

Solve the following equations for the
variables x and y:
 Page
170 #2-4, 9-11, 14, 27
 Page
178 #2, 3, 6, 7, 10, 11,
17