This preview shows pages 1–3. Sign up to view the full content.
This preview has intentionally blurred sections. Sign up to view the full version.
View Full Document
Unformatted text preview: 12 1 47 32 65 . It is a remarkable and remarkably useful fact that the three row operations can be performed using multiplication on the left by what are called elementary matrices . " 0 1 1 0 #" 12 34 # " 3 0 0 1 #" 12 34 # " 1 0 5 1 #" 12 34 # Notice that our method for nding A1 in general only solves AC = I . But for A to be invertible, we also need CA = I . Use elementary matrices to investigate more carefully the existence of A1 . HOMEWORK: SECTION 2.2...
View
Full
Document
 Spring '09
 DANIELALLCOCK

Click to edit the document details