Roboguru

Diketahui matriks dan . Jika matriks , matriks

Pertanyaan

Diketahui matriks begin mathsize 14px style straight P equals open parentheses table row cell negative 2 end cell cell negative 3 end cell row cell negative 1 end cell 1 end table close parentheses comma space straight Q equals open parentheses table row cell negative 2 end cell 2 row 4 cell negative 5 end cell end table close parentheses comma end style dan begin mathsize 14px style straight R equals open parentheses table row 7 cell negative 5 end cell row 6 5 end table close parentheses end style. Jika matriks begin mathsize 14px style straight S equals straight R minus QP end style, matriks begin mathsize 14px style straight S to the power of negative 1 end exponent equals.... end style

  1. ....

  2. ....

Pembahasan Soal:

table attributes columnalign right center left columnspacing 0px end attributes row straight S equals cell straight R minus QP end cell row blank equals cell open parentheses table row 7 cell negative 5 end cell row 6 5 end table close parentheses minus open parentheses table row cell negative 2 end cell 2 row 4 cell negative 5 end cell end table close parentheses open parentheses table row cell negative 2 end cell cell negative 3 end cell row cell negative 1 end cell 1 end table close parentheses end cell row blank equals cell open parentheses table row 7 cell negative 5 end cell row 6 5 end table close parentheses minus open parentheses table row 2 8 row cell negative 3 end cell cell negative 17 end cell end table close parentheses end cell row blank equals cell open parentheses table row 5 cell negative 13 end cell row 9 22 end table close parentheses end cell row cell straight S to the power of negative 1 end exponent end cell equals cell 1 over 227 open parentheses table row 22 13 row cell negative 9 end cell 5 end table close parentheses end cell end table 

Jadi, hasil dari invers matriks S adalah table attributes columnalign right center left columnspacing 0px end attributes row blank blank cell 1 over 227 end cell end table table attributes columnalign right center left columnspacing 0px end attributes row blank blank cell open parentheses table row 22 13 row cell negative 9 end cell 5 end table close parentheses end cell end table.

Pembahasan terverifikasi oleh Roboguru

Terakhir diupdate 05 Mei 2021

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