Roboguru

Pertanyaan

Jika u with rightwards arrow on top equals negative 4 i with hat on top minus 2 j with hat on top space dan space v with rightwards arrow on top equals 2 i with hat on top minus j with hat on top space maka space vektor space p with rightwards arrow on top yang memenuhi u with rightwards arrow on top plus p with rightwards arrow on top equals 2 v with rightwards arrow on top adalah .....

  1. open parentheses 0 comma negative 4 close parentheses      

  2. open parentheses 2 comma 0 close parentheses     

  3. open parentheses 8 comma 0 close parentheses   

  4. open parentheses negative 4 comma 0 close parentheses      

  5. open parentheses 0 comma negative 2 close parentheses      

E. Lestari

Master Teacher

Mahasiswa/Alumni Universitas Sebelas Maret

Jawaban terverifikasi

Jawaban

jawaban yang tepat adalah C.

Pembahasan

Ingat! 

  • Konsep penjumlahan vektor

table attributes columnalign right center left columnspacing 0px end attributes row cell open parentheses table row a row b end table close parentheses plus open parentheses table row c row d end table close parentheses end cell equals cell open parentheses table row cell a plus c end cell row cell b plus d end cell end table close parentheses end cell end table

  • Konsep perkalian skalar vektor

​​​​​​​table attributes columnalign right center left columnspacing 0px end attributes row cell k open parentheses table row a row b end table close parentheses end cell equals cell open parentheses table row cell k a end cell row cell k b end cell end table close parentheses end cell end table

Berdasarakan konsep di atas maka berlaku

table attributes columnalign right center left columnspacing 0px end attributes row cell u with rightwards arrow on top plus p with rightwards arrow on top end cell equals cell 2 v with rightwards arrow on top end cell row cell open parentheses table row cell negative 4 end cell row cell negative 2 end cell end table close parentheses plus p with rightwards arrow on top end cell equals cell 2 open parentheses table row 2 row cell negative 1 end cell end table close parentheses end cell row cell p with rightwards arrow on top end cell equals cell open parentheses table row 4 row cell negative 2 end cell end table close parentheses minus open parentheses table row cell negative 4 end cell row cell negative 2 end cell end table close parentheses end cell row cell p with rightwards arrow on top end cell equals cell open parentheses table row 8 row 0 end table close parentheses end cell end table 

Dengan demikian vektor table attributes columnalign right center left columnspacing 0px end attributes row cell p with rightwards arrow on top end cell equals cell open parentheses table row 8 row 0 end table close parentheses end cell end table.

Oleh karena itu jawaban yang tepat adalah C.

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