Pertanyaan

Diketahui matriks . Invers matriks X adalah ...

$fraction numerator negative 1 over denominator 10 end fraction open parentheses table row cell negative 6 end cell 7 row 4 cell negative 3 end cell end table close parentheses$

R. Diah

Master Teacher

Mahasiswa/Alumni Universitas Negeri Malang

Jawaban terverifikasi

Pembahasan

$X equals left parenthesis A B right parenthesis equals open parentheses table row 2 3 row cell negative 1 end cell 1 end table close parentheses open parentheses table row cell negative 3 end cell cell negative 1 end cell row 4 2 end table close parentheses equals open parentheses table row cell 2 left parenthesis negative 3 right parenthesis plus 3.4 end cell cell 2 left parenthesis negative 1 right parenthesis plus 3 left parenthesis 2 right parenthesis end cell row cell left parenthesis negative 1 right parenthesis left parenthesis negative 3 right parenthesis plus 1.4 end cell cell left parenthesis negative 1 right parenthesis left parenthesis negative 1 right parenthesis plus 1.2 end cell end table close parentheses equals open parentheses table row cell negative 6 plus 12 end cell cell negative 2 plus 6 end cell row cell 3 plus 4 end cell cell 1 plus 2 end cell end table close parentheses equals open parentheses table row 6 4 row 7 3 end table close parentheses X to the power of negative 1 end exponent equals fraction numerator 1 over denominator open vertical bar X close vertical bar end fraction space a d j space X equals fraction numerator 1 over denominator 6.3 minus 4.7 end fraction open parentheses table row 3 cell negative 4 end cell row cell negative 7 end cell 6 end table close parentheses equals negative 1 over 10 open parentheses table row 3 cell negative 4 end cell row cell negative 7 end cell 6 end table close parentheses equals 1 over 10 open parentheses table row cell negative 3 end cell 4 row 7 cell negative 6 end cell end table close parentheses$