Pertanyaan

Jika dan X adalah mariks ordo (2x2) maka X adalah…

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Pembahasan

$X equals open parentheses table row cell negative 1 end cell 2 row 2 3 end table close parentheses to the power of negative 1 end exponent open parentheses table row 5 0 row 11 7 end table close parentheses space space space space equals fraction numerator 1 over denominator negative 3 minus 4 end fraction open parentheses table row 3 cell negative 2 end cell row cell negative 2 end cell cell negative 1 end cell end table close parentheses open parentheses table row 5 0 row 11 7 end table close parentheses space space space space equals negative 1 over 7 open parentheses table row 3 cell negative 2 end cell row cell negative 2 end cell cell negative 1 end cell end table close parentheses open parentheses table row 5 0 row 11 7 end table close parentheses space space space space equals negative 1 over 7 open parentheses table row cell 15 minus 22 end cell cell negative 14 end cell row cell negative 10 minus 11 end cell cell negative 7 end cell end table close parentheses space space space space equals negative 1 over 7 open parentheses table row cell negative 7 end cell cell negative 14 end cell row cell negative 21 end cell cell negative 7 end cell end table close parentheses space space space equals open parentheses table row 1 2 row 3 1 end table close parentheses$