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Diketahui vektor , , dan . Tentukan hasil dari: b...

Diketahui vektor begin mathsize 14px style p with rightwards arrow on top equals negative 4 i with rightwards arrow on top minus 7 j with rightwards arrow on top end stylebegin mathsize 14px style q with rightwards arrow on top equals negative i with rightwards arrow on top plus 3 j with rightwards arrow on top end style, dan begin mathsize 14px style r with rightwards arrow on top equals 2 i with rightwards arrow on top plus j with rightwards arrow on top end style. Tentukan hasil dari:

b. begin mathsize 14px style p with rightwards arrow on top times q with rightwards arrow on top end style 

Jawaban:

Dengan menerapkan konsep perkalian vektor dot product, diperoleh perhitungan sebagai berikut.

begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row cell p with rightwards arrow on top times q with rightwards arrow on top end cell equals cell open parentheses negative 4 close parentheses open parentheses negative 1 close parentheses plus open parentheses negative 7 close parentheses open parentheses 3 close parentheses end cell row blank equals cell 4 plus open parentheses negative 21 close parentheses end cell row blank equals cell negative 17 end cell end table end style 

Dengan demikian, hasil dari begin mathsize 14px style p with rightwards arrow on top times q with rightwards arrow on top end style adalah table attributes columnalign right center left columnspacing 0px end attributes row blank blank size 14px minus end table table attributes columnalign right center left columnspacing 0px end attributes row blank blank size 14px 17 end table.

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