MATH 223 Lecture 24: Nov 24, 2016

Solve the system in Exercise 8b, on page 37, using inverses. Do you think this was less work than simply reducing the augmented matrix? Explain. +3y + z = 1 2x + 4y + 7z = 2 3x + 10y + 5z = 7

Solve the system in Exercise 8b, on page 37, using inverses. Do you think this was less work than simply reducing the augmented matrix? Explain. X + 3y + z = 1 2x + 4y + 7z = 2 3x + 10y + 5z = 7

| Use the inverse matrices to find (AB)-1, (AT)-1, and (24)-1 1 -1 ー2-3 -1 2 (a) (AB)-1 timや (b) (AT)-1 (c) (2A)-1