Day 15 in Mat225

Today:

• 2.3: characterization of invertible matrices (behind by a section). This is the last section that will appear on the test.

• Test next Monday - through 2.3

• Sorry: haven't finished grading section 2.1 (#22, 23)

• Questions/Comments on old stuff?

• Section 2.3
  • section 2.3 summary

  • Matlab file for #5, #9, #42, and a look at the proof structure of the invertible matrix theorem.

  • version of that....

  • Condition number applet

Next time: 2.4/2.5