Roboguru

Diketahui vektor , , dan . Jika vektor  mewakili , vektor  mewakili , dan vektor  mewakili , tentukan

Pertanyaan

Diketahui vektor begin mathsize 14px style stack O P with rightwards arrow on top equals open parentheses table row 3 row cell negative 2 end cell end table close parentheses end stylebegin mathsize 14px style stack O Q with rightwards arrow on top equals open parentheses table row cell negative 1 end cell row 5 end table close parentheses end style, dan begin mathsize 14px style stack O R with rightwards arrow on top equals open parentheses table row 7 row 4 end table close parentheses end style. Jika vektor begin mathsize 14px style a with rightwards arrow on top end style mewakili begin mathsize 14px style stack P Q with rightwards arrow on top end style, vektor begin mathsize 14px style b with rightwards arrow on top end style mewakili begin mathsize 14px style stack Q R with rightwards arrow on top end style, dan vektor begin mathsize 14px style c with rightwards arrow on top end style mewakili begin mathsize 14px style stack P R with rightwards arrow on top end style, tentukan

begin mathsize 14px style a with rightwards arrow on top plus b with rightwards arrow on top end style 

Pembahasan Soal:

begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row cell a with rightwards arrow on top end cell equals cell stack P Q with rightwards arrow on top end cell row blank equals cell stack P O with rightwards arrow on top plus stack O Q with rightwards arrow on top end cell row blank equals cell negative open parentheses table row 3 row cell negative 2 end cell end table close parentheses plus open parentheses table row cell negative 1 end cell row 5 end table close parentheses end cell row blank equals cell open parentheses table row cell negative 4 end cell row 7 end table close parentheses end cell row blank blank blank end table end style 

begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row cell b with rightwards arrow on top end cell equals cell stack Q O with rightwards arrow on top plus stack O R with rightwards arrow on top end cell row blank equals cell negative open parentheses table row cell negative 1 end cell row 5 end table close parentheses plus open parentheses table row 7 row 4 end table close parentheses end cell row blank equals cell open parentheses table row 8 row cell negative 1 end cell end table close parentheses end cell row blank blank blank end table end style 

begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row cell a with rightwards arrow on top plus b with rightwards arrow on top end cell equals cell open parentheses table row cell negative 4 end cell row 7 end table close parentheses plus open parentheses table row 8 row cell negative 1 end cell end table close parentheses end cell row blank equals cell open parentheses table row 4 row 6 end table close parentheses end cell end table end style 

Pembahasan terverifikasi oleh Roboguru

Terakhir diupdate 02 Maret 2021

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