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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 a + b − 2 c = ...

  1. open parentheses table row cell negative 1 end cell row 14 row cell negative 9 end cell end table close parentheses

  2. open parentheses table row cell negative 1 end cell row 14 row cell negative 4 end cell end table close parentheses

  3. open parentheses table row cell negative 1 end cell row 14 row cell negative 3 end cell end table close parentheses

  4. open parentheses table row cell negative 1 end cell row 14 row cell negative 2 end cell end table close parentheses

  5. open parentheses table row cell negative 1 end cell row 14 row cell negative 1 end cell end table close parentheses

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F. Kurnia

Master Teacher

Mahasiswa/Alumni Universitas Jember

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Pembahasan

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 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. open parentheses table row 4 row 4 row straight m end table close parentheses equals 0  1 left parenthesis 4 right parenthesis plus 2 left parenthesis 4 right parenthesis plus left parenthesis negative 3 right parenthesis straight m equals 0  1 plus 8 minus 3 straight m equals 0  minus 3 straight m equals negative 12  straight m equals 4  Maka space hasil space dari comma  straight a with rightwards arrow on top plus straight b with rightwards arrow on top minus 2 straight c with rightwards arrow on top equals open parentheses table row 1 row 2 row cell negative 3 end cell end table close parentheses plus open parentheses table row 4 row 4 row 4 end table close parentheses minus 2 open parentheses table row 3 row cell negative 4 end cell row 5 end table close parentheses  space equals open parentheses table row 1 row 2 row cell negative 3 end cell end table close parentheses plus open parentheses table row 4 row 4 row 4 end table close parentheses minus open parentheses table row 6 row cell negative 8 end cell row 10 end table close parentheses  equals open parentheses table row cell negative 1 end cell row 14 row cell negative 9 end cell end table close parentheses

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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 2 a − b − c = ....

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