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Pertanyaan

Jika a = 2 i + j ​ − 4 k dan b = 3 i − 2 j ​ − 5 k , hasil operasi 5 a − 3 b adalah ....

Jika , hasil operasi adalah ....

  1. begin mathsize 14px style straight i with hat on top plus 11 space straight j with hat on top plus 5 space straight k with hat on top space end style 

  2. begin mathsize 14px style straight i with hat on top plus 11 space straight j with hat on top minus 5 space straight k with hat on top space end style

  3. begin mathsize 14px style straight i with hat on top minus 11 space straight j with hat on top minus 5 space straight k with hat on top space end style

  4. begin mathsize 14px style negative straight i with hat on top plus 11 space straight j with hat on top plus 5 space straight k with hat on top space end style

  5. begin mathsize 14px style negative straight i with hat on top minus 11 space straight j with hat on top minus 5 space straight k with hat on top space end style

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N. Putri

Master Teacher

Mahasiswa/Alumni Universitas Negeri Jakarta

Jawaban terverifikasi

Jawaban

jawaban yang tepat adalah B.

jawaban yang tepat adalah B.

Pembahasan

Jadi, jawaban yang tepat adalah B.

begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row cell 5 straight a with rightwards arrow on top minus 3 straight b with rightwards arrow on top end cell equals cell 5 left parenthesis 2 straight i with rightwards arrow on top plus straight j with hat on top minus 4 straight k with hat on top right parenthesis minus 3 left parenthesis 3 straight i with rightwards arrow on top minus 2 straight j with hat on top minus 5 straight k with hat on top right parenthesis end cell row blank equals cell straight i with rightwards arrow on top plus 11 straight j with hat on top minus 5 straight k with hat on top end cell end table end style

Jadi, jawaban yang tepat adalah B.

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Diketahui vektor u = 2 ⎝ ⎛ ​ 1 4 − 2 ​ ⎠ ⎞ ​ + 3 ⎝ ⎛ ​ 2 − 1 3 ​ ⎠ ⎞ ​ dan v = 3 2 ​ ⎝ ⎛ ​ 6 0 − 3 ​ ⎠ ⎞ ​ − 2 ⎝ ⎛ ​ 1 4 − 2 ​ ⎠ ⎞ ​ . Tentukan: a. u dan v b. Hasil operasi 2 u − 4 v

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5.0

Jawaban terverifikasi

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