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Pertanyaan

Diketahui vektor-vektor a = ⎝ ⎛ ​ 1 2 − 3 ​ ⎠ ⎞ ​ , b = ⎝ ⎛ ​ 4 4 m ​ ⎠ ⎞ ​ , dan c = ⎝ ⎛ ​ 3 − 4 5 ​ ⎠ ⎞ ​ . Jika a tegak lurus b , hasil dari 2 a − b − c = ....

Diketahui vektor-vektor , dan . Jika tegak lurus , hasil dari = ....

  1. begin mathsize 14px style open parentheses table row cell negative 5 end cell row 4 row cell negative 15 end cell end table close parentheses end style

  2. begin mathsize 14px style open parentheses table row cell negative 5 end cell row 4 row cell negative 10 end cell end table close parentheses end style

  3. begin mathsize 14px style open parentheses table row cell negative 5 end cell row 4 row cell negative 6 end cell end table close parentheses end style

  4. begin mathsize 14px style open parentheses table row cell negative 5 end cell row 4 row cell negative 4 end cell end table close parentheses end style

  5. begin mathsize 14px style open parentheses table row cell negative 5 end cell row 4 row cell negative 2 end cell end table close parentheses end style

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F. Kurnia

Master Teacher

Mahasiswa/Alumni Universitas Jember

Jawaban terverifikasi

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Pembahasan

begin mathsize 14px style Karena space straight a with rightwards arrow on top space tegak space lurus space straight b with rightwards arrow on top space maka  straight a with rightwards arrow on top straight space. straight space straight b with rightwards arrow on top equals 0  open parentheses table row 1 row 2 row cell negative 3 end cell end table close parentheses straight space. straight space open parentheses table row 4 row 4 row straight m end table close parentheses equals 0  1 open parentheses 4 close parentheses plus 2 open parentheses 4 close parentheses plus open parentheses negative 3 close parentheses straight m equals 0  minus 3 straight m equals negative 12 rightwards arrow straight m equals 4.    Maka space hasil space dari comma  straight a with rightwards arrow on top minus straight b with rightwards arrow on top minus straight c with rightwards arrow on top equals 2 open parentheses table row 1 row 2 row cell negative 3 end cell end table close parentheses minus open parentheses table row 4 row 4 row 4 end table close parentheses minus open parentheses table row 3 row cell negative 4 end cell row 5 end table close parentheses  straight a with rightwards arrow on top minus straight b with rightwards arrow on top minus straight c with rightwards arrow on top equals open parentheses table row 2 row 4 row cell negative 6 end cell end table close parentheses minus open parentheses table row 4 row 4 row 4 end table close parentheses minus open parentheses table row 3 row cell negative 4 end cell row 5 end table close parentheses  straight a with rightwards arrow on top minus straight b with rightwards arrow on top minus straight c with rightwards arrow on top equals open parentheses table row cell negative 5 end cell row 4 row cell negative 15 end cell end table close parentheses end style

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Diketahui vektor − vektor a = ⎝ ⎛ ​ 1 2 − 3 ​ ⎠ ⎞ ​ , b = ⎝ ⎛ ​ 4 4 m ​ ⎠ ⎞ ​ , dan c = ⎝ ⎛ ​ 3 − 4 5 ​ ⎠ ⎞ ​ . Jika a tegak lurus b , hasil dari a + b − 2 c = ...

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