Homework Statement
Suppose a 3 x 5 matrix A has row-reduced echelon form:
[[1 2 0 0 5]
[0 0 1 0 4]
[0 0 0 1 3]]
a. Describe NS(A)
b. Describe CS(A)
c. Suppose
. [[2]
. [3] [[-2]
A [5] = [4] = b
. [1] [3]]
. [9]]
To be clear, that's the original matrix A times the...