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Pertanyaan

Diketahui matriks A equals open parentheses table row 3 0 row 2 0 end table close parentheses comma space B equals open parentheses table row 2 1 row 3 2 end table close parentheses, dan A + B = C. Invers matriks C adalah ........

 

  1. open parentheses table row cell 2 over 5 end cell cell negative 1 fifth end cell row cell negative 1 end cell 1 end table close parentheses

  2. open parentheses table row 1 cell negative 1 fifth end cell row cell negative 1 end cell cell 2 over 5 end cell end table close parentheses

  3. open parentheses table row 1 cell 1 fifth end cell row cell negative 1 end cell cell 2 over 5 end cell end table close parentheses

  4. open parentheses table row cell 2 over 5 end cell cell 1 fifth end cell row 1 cell 2 over 5 end cell end table close parentheses

  5. open parentheses table row cell 2 over 5 end cell cell negative 1 end cell row cell negative 1 fifth end cell 1 end table close parentheses

A. Acfreelance

Master Teacher

Jawaban terverifikasi

Pembahasan

C equals A plus B equals open parentheses table row 3 0 row 2 0 end table close parentheses plus open parentheses table row 2 1 row 3 2 end table close parentheses equals open parentheses table row 5 1 row 5 2 end table close parentheses

Invers dari matriks

open parentheses table row a b row c d end table close parentheses rightwards arrow fraction numerator 1 over denominator a d minus b c end fraction open parentheses table row d cell negative b end cell row cell negative c end cell a end table close parentheses

Maka

X to the power of negative 1 end exponent equals fraction numerator 1 over denominator 5.2 minus 1.5 end fraction open parentheses table row 2 cell negative 1 end cell row cell negative 5 end cell 5 end table close parentheses equals 1 fifth open parentheses table row 2 cell negative 1 end cell row cell negative 5 end cell 5 end table close parentheses equals open parentheses table row cell 2 over 5 end cell cell negative 1 fifth end cell row cell negative 1 end cell 1 end table close parentheses

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Tentukan invers dari matriks berikut C=(−45​−79​)

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