Pertanyaan

Determinan matriks P yang memenuhi dengan ad ≠ bc adalah ....

-1
0
1
2ad-2bc
2bc-2ad

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$begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row cell det invisible function application open parentheses P open parentheses table row a b row c d end table close parentheses close parentheses end cell equals cell det invisible function application open parentheses table row a b row cell negative a plus c end cell cell negative b plus d end cell end table close parentheses end cell row cell det invisible function application P cross times det invisible function application open parentheses table row a b row c d end table close parentheses end cell equals cell det invisible function application open parentheses table row a b row cell negative a plus c end cell cell negative b plus d end cell end table close parentheses end cell row cell det invisible function application P cross times open parentheses a times d minus b times c close parentheses end cell equals cell open parentheses a times open parentheses negative b plus d close parentheses minus b times open parentheses negative a plus c close parentheses close parentheses end cell row cell det invisible function application P cross times open parentheses a d minus b c close parentheses end cell equals cell open parentheses negative a b plus a d plus a b minus b c close parentheses end cell row cell det invisible function application P cross times open parentheses a d minus b c close parentheses end cell equals cell open parentheses a d minus b c close parentheses semicolon a d not equal to b c end cell row cell det invisible function application P end cell equals cell fraction numerator a d minus b c over denominator a d minus b c end fraction end cell row cell det invisible function application P end cell equals 1 end table end style$