Roboguru

Diketahui vektor  dan  Vektor yang mewakili  adalah...

Pertanyaan

Diketahui vektor begin mathsize 14px style a with rightwards arrow on top equals 3 i with hat on top minus 2 j with hat on top plus k with hat on top comma space space b with rightwards arrow on top equals 2 i with hat on top minus 3 stack k comma with hat on top end style dan begin mathsize 14px style c with rightwards arrow on top equals j with hat on top minus 2 k with hat on top. end style Vektor yang mewakili begin mathsize 14px style 2 a with rightwards arrow on top minus 3 b with rightwards arrow on top plus c with rightwards arrow on top end style adalah...undefined 

  1. begin mathsize 14px style 12 i with hat on top minus 5 j with hat on top plus 12 k with hat on top end style 

  2. begin mathsize 14px style negative 3 j with hat on top plus 9 k with hat on top end style 

  3. begin mathsize 14px style negative 7 j with hat on top minus 9 k with hat on top end style 

  4. begin mathsize 14px style negative 3 i with hat on top minus 3 j with hat on top plus 9 k with hat on top end style 

  5. begin mathsize 14px style 3 i with hat on top minus j with hat on top plus 9 k with hat on top end style  

Pembahasan Soal:

Perhatikan penghitungan berikut!

begin mathsize 14px style a with rightwards arrow on top equals open parentheses table row 3 row cell negative 2 end cell row 1 end table close parentheses space semicolon space b with rightwards arrow on top equals open parentheses table row 2 row 0 row cell negative 3 end cell end table close parentheses space semicolon space c with rightwards arrow on top equals open parentheses table row 0 row 1 row cell negative 2 end cell end table close parentheses 2 a with rightwards arrow on top minus 3 b with rightwards arrow on top plus c with rightwards arrow on top equals 2 open parentheses table row 3 row cell negative 2 end cell row 1 end table close parentheses minus 3 open parentheses table row 2 row 0 row cell negative 3 end cell end table close parentheses plus open parentheses table row 0 row 1 row cell negative 2 end cell end table close parentheses equals open parentheses table row 6 row cell negative 4 end cell row 2 end table close parentheses minus open parentheses table row 6 row 0 row cell negative 9 end cell end table close parentheses plus open parentheses table row 0 row 1 row cell negative 2 end cell end table close parentheses equals open parentheses table row cell 6 minus 6 plus 0 end cell row cell negative 4 minus 0 plus 1 end cell row cell 2 minus left parenthesis negative 9 right parenthesis minus 2 end cell end table close parentheses equals open parentheses table row 0 row cell negative 3 end cell row 9 end table close parentheses equals negative 3 j with hat on top plus 9 k with hat on top end style 

Oleh karena itu, jawaban yang ebnar adalah B. undefined 

Pembahasan terverifikasi oleh Roboguru

Terakhir diupdate 13 Maret 2021

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