b x - 3y + 5 = 0 2x + 3y - 5 = 0

Matrix and Vector Multiplication Wednesday, October 12, 2016 4:03 PM Multiplying a Matrix and a Vector Let a1… am, and x be vectorsin Rn Example: Theorem: Let a 1 a m and b be vectorsin R n 1. b is in the span(1 , … ,mu ) 2. b = ▯▯ ▯▯ + ▯▯ ▯ + ⋯+ ▯ ▯▯ ▯▯ ℎas at least one solution 3. Linear system of [u 1 u2, …, m , b] has at least one solution 4. This: has at...