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mdm12Section1_6_OddSolutionsFinal

# mdm12Section1_6_OddSolutionsFinal - Q1-5 Q9-11 Q15-19 Q7...

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Q1-5 Q7 Q9-11 Q13 Q15-19 CHAPTER 1 Section 1.6, pp. 60–62 Solutions to Odd Number Problems 1. dimension = number of rows × number of columns a) 2 × 3 b) 1 3 c) 4 × × 3 3. a) matrices are fun b) i love math c) wow this is fun 5. a) Answers may vary. d c b a i h g f e d c b a b) 2 2 and 3 × 3 × Top

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7. a) x = 3 4 = y – 1 y = 5 –2 = w 4 z – 2 = 6 4 z = 8 z = 2 b) w 3 = 8 w = 2 x 2 = 9 x = ± 3 2 y = 8 – 2 y 4 y = 8 y = 2 3 z = 2 z – 5 z = –5 Top
9. a) 80 61 12 24 4953 87 32 52 AB +− ⎡⎤ ⎢⎥ += + −+ = ⎣⎦ 08 16 21 42 94 35 BA −− + = b) () 82 73 3826 5421 10 4 11 4 93 AB C + ++=+ ++ =− 86 22 121 02 45 1 3 2 10 4 11 4 ABC ⎤⎡ ⎥⎢ + += ⎦⎣ c) 55 3 40 35 15 10 25 10 = 2 40 30 0 5 5 1 01 0 20 25 45 15 40 35 15 10 25 10 = 11. a) 701 32 5 43 2 20 8 426 63 1 0 A = b) 5 + y = 7 y = 2 Top

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13. a)
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mdm12Section1_6_OddSolutionsFinal - Q1-5 Q9-11 Q15-19 Q7...

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