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Diketahui P = ( 2 − 1 ​ − 3 6 ​ ) , Q = ( − 2 8 ​ 5 2 ​ ) , R = ( 5 4 ​ 1 − 2 ​ ) . Tentukan: ( Q + R − P ) T

Diketahui . Tentukan:

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I. Ridha

Master Teacher

Mahasiswa/Alumni Universitas Negeri Surabaya

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Jawaban

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open parentheses Q plus R minus P close parentheses to the power of T equals open parentheses table row 1 13 row 9 cell negative 6 end cell end table close parentheses

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Pembahasan

Ingat kembali penjumlahan dua matriks: pengurangandua matriks: matriks transpose dari matriks adalah Dengan demikian, karena , maka sehingga diperoleh transpose dari adalah Jadi, .

Ingat kembali

  • penjumlahan dua matriks: open parentheses table row a b row c d end table close parentheses plus open parentheses table row m n row o p end table close parentheses equals open parentheses table row cell a plus m end cell cell b plus n end cell row cell c plus o end cell cell d plus p end cell end table close parentheses
  • pengurangan dua matriks: open parentheses table row a b row c d end table close parentheses minus open parentheses table row m n row o p end table close parentheses equals open parentheses table row cell a minus m end cell cell b minus n end cell row cell c minus o end cell cell d minus p end cell end table close parentheses
  • matriks transpose dari matriks A equals open parentheses table row a b row c d end table close parentheses adalah A to the power of T equals open parentheses table row a c row b d end table close parentheses

Dengan demikian, karena P equals open parentheses table attributes columnalign right right end attributes row 2 cell negative 3 end cell row cell negative 1 end cell 6 end table close parentheses comma space Q equals open parentheses table attributes columnalign right center end attributes row cell negative 2 end cell 5 row 8 2 end table close parentheses comma space R equals open parentheses table attributes columnalign right right end attributes row 5 1 row 4 cell negative 2 end cell end table close parentheses, maka 

table attributes columnalign right center left columnspacing 0px end attributes row cell Q plus R minus P end cell equals cell open parentheses table attributes columnalign right center end attributes row cell negative 2 end cell 5 row 8 2 end table close parentheses plus open parentheses table attributes columnalign right right end attributes row 5 1 row 4 cell negative 2 end cell end table close parentheses minus open parentheses table attributes columnalign right right end attributes row 2 cell negative 3 end cell row cell negative 1 end cell 6 end table close parentheses end cell row blank equals cell open parentheses table attributes columnalign center center end attributes row cell negative 2 plus 5 end cell cell 5 plus 1 end cell row cell 8 plus 4 end cell cell 2 plus open parentheses negative 2 close parentheses end cell end table close parentheses minus open parentheses table attributes columnalign right right end attributes row 2 cell negative 3 end cell row cell negative 1 end cell 6 end table close parentheses end cell row blank equals cell open parentheses table attributes columnalign center center end attributes row cell negative 2 plus 5 end cell cell 5 plus 1 end cell row cell 8 plus 4 end cell cell 2 minus 2 end cell end table close parentheses minus open parentheses table attributes columnalign right right end attributes row 2 cell negative 3 end cell row cell negative 1 end cell 6 end table close parentheses end cell row blank equals cell open parentheses table attributes columnalign center center end attributes row 3 6 row 12 0 end table close parentheses minus open parentheses table attributes columnalign right right end attributes row 2 cell negative 3 end cell row cell negative 1 end cell 6 end table close parentheses end cell row blank equals cell open parentheses table attributes columnalign center center end attributes row cell 3 minus 2 end cell cell 6 minus open parentheses negative 3 close parentheses end cell row cell 12 minus open parentheses negative 1 close parentheses end cell cell 0 minus 6 end cell end table close parentheses end cell row blank equals cell open parentheses table attributes columnalign center center end attributes row cell 3 minus 2 end cell cell 6 plus 3 end cell row cell 12 plus 1 end cell cell 0 minus 6 end cell end table close parentheses end cell row blank equals cell open parentheses table attributes columnalign center center end attributes row 1 9 row 13 cell negative 6 end cell end table close parentheses end cell end table

sehingga diperoleh transpose dari open parentheses Q plus R minus P close parentheses equals open parentheses table row 1 9 row 13 cell negative 6 end cell end table close parentheses adalah open parentheses Q plus R minus P close parentheses to the power of T equals open parentheses table row 1 13 row 9 cell negative 6 end cell end table close parentheses 

Jadi, open parentheses Q plus R minus P close parentheses to the power of T equals open parentheses table row 1 13 row 9 cell negative 6 end cell end table close parentheses

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Diberikan matriks-matriks A , B , C , D , E , F , dan G berikut. A = ( 2 − 1 ​ 3 4 ​ ) B = ( 1 3 ​ − 1 0 ​ ) C = ( 1 0 ​ 0 1 ​ ) D = ( − 1 4 ​ 2 0 ​ 3 5 ​ ) E = ⎝ ⎛ ​ 2 8 6 ​ 1 − 1 5 ​ ⎠ ⎞ ​ F = ⎝ ...

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