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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.

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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

1

5.0

Jawaban terverifikasi

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