Pertanyaan

Jika sistem persamaan linear dua variabel, { 2 x − 3 y = P 3 x + 2 y = Q dan x = det ( 2 3 − 3 2 ) a , maka a sama dengan ....

Jika sistem persamaan linear dua variabel, ${2 x - 3 y = P 3 x + 2 y = Q$ dan $x = \frac{a}{det ( 2 3 - 3 2 )}$ , maka $a$ sama dengan ....

A. Septianingsih

Master Teacher

Mahasiswa/Alumni Universitas Gadjah Mada

Jawaban terverifikasi

Pembahasan

$table attributes columnalign right center left columnspacing 0px end attributes row blank blank cell Menentukan space nilai space straight x space dan space straight y space dengan space matriks end cell row cell open parentheses table row 2 cell negative 3 end cell row 3 2 end table close parentheses open parentheses table row straight x row straight y end table close parentheses end cell equals cell open parentheses table row straight P row straight Q end table close parentheses end cell row cell open parentheses table row straight x row straight y end table close parentheses end cell equals cell 1 over 13 open parentheses table row 2 3 row cell negative 3 end cell 2 end table close parentheses open parentheses table row straight P row straight Q end table close parentheses end cell row cell open parentheses table row straight x row straight y end table close parentheses end cell equals cell 1 over 13 open parentheses table row cell 2 straight P plus 3 straight Q end cell row cell negative 3 straight P plus 2 straight Q end cell end table close parentheses end cell row straight x equals cell fraction numerator straight a over denominator det open parentheses table row 2 cell negative 3 end cell row 3 2 end table close parentheses end fraction end cell row cell 1 over 13 open parentheses 2 straight P plus 3 straight Q close parentheses end cell equals cell straight a over 13 end cell row cell 2 straight P plus 3 straight Q end cell equals straight a end table$