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Diketahui vektor−vektor a=2i+3j+k,  b=3i−2k, dan  c=2j−5kVektor a+2b−c adalah....

Pertanyaan

D i k e t a h u i space v e k t o r minus v e k t o r space a with rightwards arrow on top equals 2 i plus 3 j plus k comma space space b with rightwards arrow on top equals 3 i minus 2 k comma space d a n space space c with rightwards arrow on top equals 2 j minus 5 k  V e k t o r space a with rightwards arrow on top plus 2 b with rightwards arrow on top minus c with rightwards arrow on top space a d a l a h....

  1. 8i+5j-6k

  2. 8i-5j-6k

  3. 8i-3j+12k

  4. 8i-j+12k

  5. 8i-j+10k

F. Pratama

Master Teacher

Mahasiswa/Alumni Universitas Putra Indonesia YPTK Padang

Jawaban terverifikasi

Pembahasan

a with rightwards arrow on top equals 2 i with rightwards arrow on top plus 3 j with rightwards arrow on top plus k with rightwards arrow on top equals open parentheses table row 2 row 3 row 1 end table close parentheses  b with rightwards arrow on top equals 3 i with rightwards arrow on top minus k with rightwards arrow on top equals open parentheses table row 3 row 0 row cell negative 2 end cell end table close parentheses  c with rightwards arrow on top equals 2 j with rightwards arrow on top minus 5 k with rightwards arrow on top equals open parentheses table row 0 row 2 row cell negative 5 end cell end table close parentheses  a with rightwards arrow on top plus 2 b with rightwards arrow on top minus 3 c with rightwards arrow on top  equals open parentheses table row 2 row 3 row 1 end table close parentheses plus 2 open parentheses table row 3 row 0 row cell negative 2 end cell end table close parentheses minus 3 open parentheses table row 0 row 2 row cell negative 5 end cell end table close parentheses  equals open parentheses table row 2 row 3 row 1 end table close parentheses plus open parentheses table row 6 row 0 row cell negative 4 end cell end table close parentheses minus open parentheses table row 0 row 6 row cell negative 15 end cell end table close parentheses  equals open parentheses table row 8 row cell negative 3 end cell row 12 end table close parentheses equals stack 8 i with rightwards arrow on top minus 2 j with rightwards arrow on top plus 12 k with rightwards arrow on top

43

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Diketahui a=(2−3​), b=(−35​), dan c=(64​). Tentukan vektor-vektor berikut. e. b+4c+a

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