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Unformatted text preview: formula for the transpose of A-1 , you can use it without proving it]. b) Prove this part of the TFAE theorem: If A is row equivalent to I , then A is nonsingular. c) If A is nonsingular, prove that det( A ) 6 = 0 [part of a Ch 2.2 theorem]. Remarks and Answers: I gave people a small break on the MATLAB problem, since the lab access has been diﬃcult; if you missed that one, I reduced the problem to 5 points and raised the TF problem to 25. The overall average was 45/60. The unoﬃcial scale is: A’s: 51 to 60 B’s: 45 to 50 C’s: 39 to 44 D’s: 33 to 38 F’s: 0 to 32 1) X = B-1 C = ±-5 2 ² 2) A 3) FTTFT 4) See text, or me. 1...
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This note was uploaded on 12/26/2011 for the course MAS 3105 taught by Professor Julianedwards during the Spring '09 term at FIU.
- Spring '09