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Diketahui matriks A = [ 0 4 k + 5 ​ 3 − 1 ​ ] , B = [ 1 2 ​ − 5 8 ​ ] , d an C = [ 1 2 ​ − 5 8 ​ ] .Nilai k yang memenuhi A + B − C − 1 = 0 adalah .....

Diketahui matriks . Nilai k yang memenuhi  adalah .....

  1. 1 half

  2. -2

  3. 2 1 half

  4. 2 1 half

  5. 1 half

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Pembahasan

A space plus space B space minus space C to the power of negative 1 end exponent space equals space 0

A space plus space B space equals space C to the power of negative 1 end exponent open square brackets table row 0 3 row cell 4 k plus 5 end cell cell negative 1 end cell end table close square brackets space plus space open square brackets table row 1 cell negative 5 end cell row 2 8 end table close square brackets space equals space fraction numerator 1 over denominator 7 minus 6 end fraction space open square brackets table row 1 cell negative 2 end cell row cell negative 3 end cell 7 end table close square brackets open square brackets table row 0 3 row cell 4 k plus 5 end cell cell negative 1 end cell end table close square brackets space plus space open square brackets table row 1 cell negative 5 end cell row 2 8 end table close square brackets space equals space open square brackets table row 1 cell negative 2 end cell row cell negative 3 end cell 7 end table close square brackets m a k a space colon 4 k space plus 5 space plus space 2 space equals space minus 3 4 k space equals space minus 10 k space equals space minus 10 over 4 equals space minus space 5 over 2 space equals negative 2 space 1 half

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Diketahui matriks A = ( 3 4 k + 1 ​ − 5 1 ​ ) , B = ( 1 2 ​ 6 2 ​ ) dan C = ( 3 − 11 ​ − 1 4 ​ ) . Nilai k yang memenuhi agar A + B − C − 1 = 0 adalah...

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0.0

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