50 Pontos. Questões sobre matrizes quem poder me ajudar com todas elas eu agradeço muito .
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17)
![2A= \left[\begin{array}{ccc}3&2\\4&1\\\end{array}\right] \\ \\ \\ -3B= \left[\begin{array}{ccc}-6&9\\3&-18\\\end{array}\right] \\ \\ \\ C= \left[\begin{array}{ccc}3&4\\0&-1\\\end{array}\right] \\ \\ \\ 2A-3B+C=\left[\begin{array}{ccc}(3-6+3)~~~&(2+9+4\\(4+3+0)~~~&(1-18-1)\\\end{array}\right] \\ \\ \\ \boxed{\boxed{2A-3B+C=\left[\begin{array}{ccc}0~~~&15\\7~~~&-18\\\end{array}\right] }}](https://tex.z-dn.net/?f=2A%3D++%5Cleft%5B%5Cbegin%7Barray%7D%7Bccc%7D3%26amp%3B2%5C%5C4%26amp%3B1%5C%5C%5Cend%7Barray%7D%5Cright%5D++%5C%5C++%5C%5C++%5C%5C+-3B%3D++%5Cleft%5B%5Cbegin%7Barray%7D%7Bccc%7D-6%26amp%3B9%5C%5C3%26amp%3B-18%5C%5C%5Cend%7Barray%7D%5Cright%5D++%5C%5C++%5C%5C++%5C%5C+C%3D++%5Cleft%5B%5Cbegin%7Barray%7D%7Bccc%7D3%26amp%3B4%5C%5C0%26amp%3B-1%5C%5C%5Cend%7Barray%7D%5Cright%5D++%5C%5C++%5C%5C++%5C%5C+2A-3B%2BC%3D%5Cleft%5B%5Cbegin%7Barray%7D%7Bccc%7D%283-6%2B3%29%7E%7E%7E%26amp%3B%282%2B9%2B4%5C%5C%284%2B3%2B0%29%7E%7E%7E%26amp%3B%281-18-1%29%5C%5C%5Cend%7Barray%7D%5Cright%5D++%5C%5C++%5C%5C++%5C%5C+%5Cboxed%7B%5Cboxed%7B2A-3B%2BC%3D%5Cleft%5B%5Cbegin%7Barray%7D%7Bccc%7D0%7E%7E%7E%26amp%3B15%5C%5C7%7E%7E%7E%26amp%3B-18%5C%5C%5Cend%7Barray%7D%5Cright%5D+%7D%7D "2A= \left[\begin{array}{ccc}3&2\\4&1\\\end{array}\right] \\ \\ \\ -3B= \left[\begin{array}{ccc}-6&9\\3&-18\\\end{array}\right] \\ \\ \\ C= \left[\begin{array}{ccc}3&4\\0&-1\\\end{array}\right] \\ \\ \\ 2A-3B+C=\left[\begin{array}{ccc}(3-6+3)~~~&(2+9+4\\(4+3+0)~~~&(1-18-1)\\\end{array}\right] \\ \\ \\ \boxed{\boxed{2A-3B+C=\left[\begin{array}{ccc}0~~~&15\\7~~~&-18\\\end{array}\right] }}")
18)
![-4A=\left[\begin{array}{ccc}-12&-8\\-16&-4\\\end{array}\right] \\ \\ \\ -2B=\left[\begin{array}{ccc}-4&6\\2&-12\\\end{array}\right] \\ \\ \\ -C=\left[\begin{array}{ccc}-3&-4\\0&-1\\\end{array}\right] \\ \\ \\ -4A-2B-C=\left[\begin{array}{ccc}(-12-4-3)~~~&(-8+6-4)\\(-16+2+0)~~~&(-4-12-1)\\\end{array}\right] \\ \\ \\ \boxed{\boxed{-4A-2B-C=\left[\begin{array}{ccc}-19&-6\\-14&-17\\\end{array}\right]}}](https://tex.z-dn.net/?f=-4A%3D%5Cleft%5B%5Cbegin%7Barray%7D%7Bccc%7D-12%26amp%3B-8%5C%5C-16%26amp%3B-4%5C%5C%5Cend%7Barray%7D%5Cright%5D++%5C%5C++%5C%5C++%5C%5C+-2B%3D%5Cleft%5B%5Cbegin%7Barray%7D%7Bccc%7D-4%26amp%3B6%5C%5C2%26amp%3B-12%5C%5C%5Cend%7Barray%7D%5Cright%5D+%5C%5C++%5C%5C++%5C%5C+-C%3D%5Cleft%5B%5Cbegin%7Barray%7D%7Bccc%7D-3%26amp%3B-4%5C%5C0%26amp%3B-1%5C%5C%5Cend%7Barray%7D%5Cright%5D+%5C%5C++%5C%5C++%5C%5C+-4A-2B-C%3D%5Cleft%5B%5Cbegin%7Barray%7D%7Bccc%7D%28-12-4-3%29%7E%7E%7E%26amp%3B%28-8%2B6-4%29%5C%5C%28-16%2B2%2B0%29%7E%7E%7E%26amp%3B%28-4-12-1%29%5C%5C%5Cend%7Barray%7D%5Cright%5D+%5C%5C++%5C%5C++%5C%5C+%5Cboxed%7B%5Cboxed%7B-4A-2B-C%3D%5Cleft%5B%5Cbegin%7Barray%7D%7Bccc%7D-19%26amp%3B-6%5C%5C-14%26amp%3B-17%5C%5C%5Cend%7Barray%7D%5Cright%5D%7D%7D "-4A=\left[\begin{array}{ccc}-12&-8\\-16&-4\\\end{array}\right] \\ \\ \\ -2B=\left[\begin{array}{ccc}-4&6\\2&-12\\\end{array}\right] \\ \\ \\ -C=\left[\begin{array}{ccc}-3&-4\\0&-1\\\end{array}\right] \\ \\ \\ -4A-2B-C=\left[\begin{array}{ccc}(-12-4-3)~~~&(-8+6-4)\\(-16+2+0)~~~&(-4-12-1)\\\end{array}\right] \\ \\ \\ \boxed{\boxed{-4A-2B-C=\left[\begin{array}{ccc}-19&-6\\-14&-17\\\end{array}\right]}}")
19)
![AC= \left[\begin{array}{ccc}(24+0)~~~&(4-3)\\(18+0)~~~&(3-6)\\\end{array}\right] \\ \\ \\\boxed{\boxed{ AC= \left[\begin{array}{ccc}24&1\\18&-3\\\end{array}\right] }}](https://tex.z-dn.net/?f=%0AAC%3D+%5Cleft%5B%5Cbegin%7Barray%7D%7Bccc%7D%2824%2B0%29%7E%7E%7E%26amp%3B%284-3%29%5C%5C%2818%2B0%29%7E%7E%7E%26amp%3B%283-6%29%5C%5C%5Cend%7Barray%7D%5Cright%5D+%5C%5C+%5C%5C+%5C%5C%5Cboxed%7B%5Cboxed%7B+AC%3D+%5Cleft%5B%5Cbegin%7Barray%7D%7Bccc%7D24%26amp%3B1%5C%5C18%26amp%3B-3%5C%5C%5Cend%7Barray%7D%5Cright%5D+%7D%7D "AC= \left[\begin{array}{ccc}(24+0)~~~&(4-3)\\(18+0)~~~&(3-6)\\\end{array}\right] \\ \\ \\\boxed{\boxed{ AC= \left[\begin{array}{ccc}24&1\\18&-3\\\end{array}\right] }}")
20)
![AB= \left[\begin{array}{ccc}(12-2)&(-4+5)\\(9-4)&(-3+10)\\\end{array}\right] \\ \\ \\ \boxed{\boxed{AB= \left[\begin{array}{ccc}10&1\\5&7\\\end{array}\right] }}](https://tex.z-dn.net/?f=AB%3D+%5Cleft%5B%5Cbegin%7Barray%7D%7Bccc%7D%2812-2%29%26amp%3B%28-4%2B5%29%5C%5C%289-4%29%26amp%3B%28-3%2B10%29%5C%5C%5Cend%7Barray%7D%5Cright%5D+%5C%5C+%5C%5C+%5C%5C+%5Cboxed%7B%5Cboxed%7BAB%3D+%5Cleft%5B%5Cbegin%7Barray%7D%7Bccc%7D10%26amp%3B1%5C%5C5%26amp%3B7%5C%5C%5Cend%7Barray%7D%5Cright%5D+%7D%7D "AB= \left[\begin{array}{ccc}(12-2)&(-4+5)\\(9-4)&(-3+10)\\\end{array}\right] \\ \\ \\ \boxed{\boxed{AB= \left[\begin{array}{ccc}10&1\\5&7\\\end{array}\right] }}")
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matheushenrique85:
Obrigado Amigo
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