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Invers dari matriks B = ( 2 3 ​ 1 6 ​ ) adalah ....

Invers dari matriks  adalah ....

  1. begin mathsize 14px style open parentheses table row cell negative 1 end cell 2 row 1 cell negative 6 end cell end table close parentheses end style 

  2. begin mathsize 14px style open parentheses table row 6 cell negative 1 end cell row cell negative 3 end cell 2 end table close parentheses end style 

  3. begin mathsize 14px style open parentheses table row cell 2 over 9 end cell cell 1 over 9 end cell row cell 1 third end cell cell 2 over 3 end cell end table close parentheses end style 

  4. begin mathsize 14px style open parentheses table row cell 2 over 3 end cell cell 1 over 9 end cell row cell 1 third end cell cell 2 over 9 end cell end table close parentheses end style 

  5. begin mathsize 14px style open parentheses table row cell 2 over 3 end cell cell negative 1 over 9 end cell row cell negative 1 third end cell cell 2 over 9 end cell end table close parentheses end style 

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begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row cell B to the power of negative 1 end exponent end cell equals cell fraction numerator 1 over denominator left parenthesis 2.6 right parenthesis minus right parenthesis 1.3 right parenthesis end fraction open parentheses table row 6 cell negative 1 end cell row cell negative 3 end cell 2 end table close parentheses end cell row blank equals cell fraction numerator 1 over denominator 12 minus 3 end fraction open parentheses table row 6 cell negative 1 end cell row cell negative 3 end cell 2 end table close parentheses end cell row blank equals cell 1 over 9 open parentheses table row 6 cell negative 1 end cell row cell negative 3 end cell 2 end table close parentheses end cell row blank equals cell open parentheses table row cell 6 over 9 end cell cell negative 1 over 9 end cell row cell negative 3 over 9 end cell cell 2 over 9 end cell end table close parentheses end cell row blank equals cell open parentheses table row cell 2 over 3 end cell cell negative 1 over 9 end cell row cell negative 1 third end cell cell 2 over 9 end cell end table close parentheses end cell end table end style 

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Diketahui . Jika dengan P − 1 adalah invers dari matriks P , maka nilai a + b + c + d = ....

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