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Diketahui matriks A = ( 1 5 ​ 2 6 ​ ) , B = ( 3 6 ​ 5 7 ​ ) . Jika C = A - B,maka invers matriks C adalah....

Diketahui matriks . Jika C = A - B, maka invers matriks C adalah....

  1. open parentheses table row 1 cell negative 3 end cell row 1 2 end table close parentheses

  2. open parentheses table row 1 3 row cell negative 1 end cell 2 end table close parentheses

  3. open parentheses table row cell negative 1 end cell 3 row 1 cell negative 2 end cell end table close parentheses

  4. open parentheses table row 1 cell negative 3 end cell row cell negative 1 end cell 2 end table close parentheses

  5. open parentheses table row 1 3 row 1 2 end table close parentheses

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S. Intan

Master Teacher

Mahasiswa/Alumni Institut Pertanian Bogor

Jawaban terverifikasi

Jawaban

.

 C to the power of negative 1 end exponent equals open parentheses table row 1 cell negative 3 end cell row cell negative 1 end cell 2 end table close parentheses.

Pembahasan

Jadi .

C equals A minus B equals open parentheses table row 1 2 row 5 6 end table close parentheses minus open parentheses table row 3 5 row 6 7 end table close parentheses equals open parentheses table row cell negative 2 end cell cell negative 3 end cell row cell negative 1 end cell cell negative 1 end cell end table close parentheses  C to the power of negative 1 end exponent equals fraction numerator 1 over denominator a d minus b c end fraction open square brackets table row d cell negative b end cell row cell negative c end cell a end table close square brackets space space space space space space space space equals fraction numerator 1 over denominator 2 minus 3 end fraction open square brackets table row cell negative 1 end cell 3 row 1 cell negative 2 end cell end table close square brackets space space space space space space space space equals negative 1 open square brackets table row cell negative 1 end cell 3 row 1 cell negative 2 end cell end table close square brackets space space space space space space space space equals open parentheses table row 1 cell negative 3 end cell row cell negative 1 end cell 2 end table close parentheses

Jadi C to the power of negative 1 end exponent equals open parentheses table row 1 cell negative 3 end cell row cell negative 1 end cell 2 end table close parentheses.

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Misalkan diberikan matriks A dan matriks B sebagai berikut: A = ( 2 3 ​ 4 1 ​ ) , B = ( 5 3 ​ 4 1 ​ ) Nilai A - 3B adalah....

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