Math 247 - Homework 8, Due on Tuesday,  March 20 at the beginning of the lecture.

1. Section 6.4 from "Linear Algebra": # 17, 18, 21
   
2. Section 6.5 from "Linear Algebra": #2(c,d), 4,  5(c,d,e),  7, 15, 17
   
3. Reading: Section 6.6 from "Linear Algebra".