Building Skills

  1. 9. Yes

  2. 11. Yes

  3. 13. No

  4. 15. No

  5. 17. Yes

  6. 19. A1=[ 1201613 ]

  7. 21. Does not exist

  8. 23. A1=[ 1810023012 ]

  9. 25. A1=[ 111110252 ]

  10. 27. [ 110234233 ]

  11. 29. A1=[ 103212 ]

  12. 31. A1=[ 5332 ]

  13. 33. A1=1b2a2 [ abba ], where a2b2

  14. 35. [ 2313 ][ xy ]=[ 913 ]

  15. 37. [ 321213132 ][ xyz ]=[ 879 ]

  16. 39. { x2y=02x+y=5

  17. 41. { 2x1+3x2+x3=15x1+7x2x3=54x1+3x2=5

  18. 43. [ 125238112 ][ 2111272531 ]=[ 100010001 ]

  19. 45. {(2,3, 1)}

  20. 47.

    1. A1=[ 3521234113212 ]

    2. {(1,2,3)}

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