Roboguru

Diketahui matriks . Matriks

Diketahui matriks begin mathsize 14px style A equals open parentheses table row 2 5 row cell negative 3 end cell 1 end table close parentheses comma space B equals open parentheses table row 6 cell negative 4 end cell row 2 7 end table close parentheses space dan space C equals open parentheses table row 1 6 row 2 cell negative 2 end cell end table close parentheses end style. Matriks begin mathsize 14px style A minus B cross times C equals... end style

  1. begin mathsize 14px style open parentheses table row 14 cell negative 50 end cell row cell negative 17 end cell cell negative 28 end cell end table close parentheses end style

  2. begin mathsize 14px style open parentheses table row 14 cell negative 48 end cell row cell negative 15 end cell cell negative 28 end cell end table close parentheses end style

  3. begin mathsize 14px style open parentheses table row 4 cell negative 50 end cell row cell negative 18 end cell cell negative 1 end cell end table close parentheses end style

  4. begin mathsize 14px style open parentheses table row 0 61 row 13 3 end table close parentheses end style

  5. begin mathsize 14px style open parentheses table row 4 cell negative 51 end cell row cell negative 19 end cell cell negative 1 end cell end table close parentheses end style

Jawaban:

Pertama lakukan perkalian matriks lalu pengurangan,

begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row cell A minus B cross times C end cell equals cell open parentheses table row 2 5 row cell negative 3 end cell 1 end table close parentheses minus open parentheses table row 6 cell negative 4 end cell row 2 7 end table close parentheses open parentheses table row 1 8 row 2 cell negative 2 end cell end table close parentheses end cell row blank equals cell open parentheses table row 2 5 row cell negative 3 end cell 1 end table close parentheses minus open parentheses table row cell negative 2 end cell 56 row 16 2 end table close parentheses end cell row blank equals cell open parentheses table row 4 cell negative 51 end cell row cell negative 19 end cell cell negative 1 end cell end table close parentheses end cell end table end style

Jadi, jawaban yang tepat adalah E.

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