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Pertanyaan

Diketahui vektor a = 3 i + 2 1 ​ j ​ − 2 1 ​ k , b = i + 5 j ​ − k , dan c = 2 3 ​ i . Hasil dari a + 2 1 ​ b − c adalah ....

Diketahui vektor , dan . Hasil dari  adalah ....

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I. Kumaralalita

Master Teacher

Mahasiswa/Alumni Universitas Gadjah Mada

Jawaban terverifikasi

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hasil dari .

hasil dari a with rightwards arrow on top plus 1 half b with rightwards arrow on top minus c with rightwards arrow on top equals 2 i with rightwards arrow on top plus 3 j with rightwards arrow on top minus k with rightwards arrow on top.

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Pembahasan

Diberikan vektor-vektor : , , . Penjumlahan dari ketiga vektor tersebut adalah Jadi, hasil dari .

Diberikan vektor-vektor : a with rightwards arrow on top equals open parentheses table row 3 row cell 1 half end cell row cell negative 1 half end cell end table close parenthesesb with rightwards arrow on top equals open parentheses table row 1 row 5 row cell negative 1 end cell end table close parenthesesc with rightwards arrow on top equals open parentheses table row cell 3 over 2 end cell row 0 row 0 end table close parentheses. Penjumlahan dari ketiga vektor tersebut adalah

table attributes columnalign right center left columnspacing 0px end attributes row cell a with rightwards arrow on top plus 1 half b with rightwards arrow on top minus c with rightwards arrow on top end cell equals cell open square brackets open parentheses table row 3 row cell 1 half end cell row cell negative 1 half end cell end table close parentheses plus 1 half times open parentheses table row 1 row 5 row cell negative 1 end cell end table close parentheses close square brackets minus open parentheses table row cell 3 over 2 end cell row 0 row 0 end table close parentheses end cell row blank equals cell open square brackets open parentheses table row 3 row cell 1 half end cell row cell negative 1 half end cell end table close parentheses plus open parentheses table row cell 1 half end cell row cell 5 over 2 end cell row cell negative 1 half end cell end table close parentheses close square brackets minus open parentheses table row cell 3 over 2 end cell row 0 row 0 end table close parentheses end cell row blank equals cell open parentheses table row cell 3 plus 1 half end cell row cell 1 half plus 5 over 2 end cell row cell negative 1 half minus 1 half end cell end table close parentheses minus open parentheses table row cell 3 over 2 end cell row 0 row 0 end table close parentheses end cell row blank equals cell open parentheses table row cell 7 over 2 end cell row 3 row cell negative 1 end cell end table close parentheses minus open parentheses table row cell 3 over 2 end cell row 0 row 0 end table close parentheses end cell row blank equals cell open parentheses table row 2 row 3 row cell negative 1 end cell end table close parentheses end cell end table 

Jadi, hasil dari a with rightwards arrow on top plus 1 half b with rightwards arrow on top minus c with rightwards arrow on top equals 2 i with rightwards arrow on top plus 3 j with rightwards arrow on top minus k with rightwards arrow on top.

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Muthia Felly Rizqina

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Jika vektor m = − 2 i + 3 j ​ dan n = 5 i + 2 j ​ . Tentukanlah: b. − 4 m + 3 n

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