MATH 254 HW 7 - A | I ] ~ [ I | A-1 ] 1. 2 4 2. 2 2 1 1 3 3...

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MATH 254, FALL 2009 HOMEWORK 7 DUE THURSDAY, OCTOBER 29 TH This assignment is due at the beginning of class, Thursday, 10/29/09. You must bring a copy to class—it can be typed or neatly hand-written. If necessary, add illustrations by hand or with computer graphics. Late homework is not accepted. Read the directions carefully. For every question that asks you to “justify your answer,” a simple calculation or response without explanation is not sufficient. Make your arguments understandable and convincing. O THER H OMEWORK Show whether or not the following three matrices, from the reflection on 10-22, are invertible or not by using the algorithm [
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Unformatted text preview: A | I ] ~ [ I | A-1 ] 1. 2 4 2. 2 2 1 1 3 3 3. 5 1 10 2 B OOK H OMEWORK This assignment comes out of section 2.2 (pp. 126-127) in the text. For the computational ones, show enough work where it will be easy to follow how you got your answer. 4. #2 5. #4 6. #10 7. #13 8. #14 9. #17 10. #18 11. #21 12. #22 13. #23 14. #24 15. #30 16. #32 17. #35 18. #38 Not a HW problem: #33 and 34 are pretty challenging but kind of a fun puzzle. These aren’t homework but give them a try if you want an extra challenge!...
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This note was uploaded on 11/03/2009 for the course MATH 22157 taught by Professor Meganwawro during the Spring '09 term at San Diego State.

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