Roboguru

Diketahui vektor  dan . Vektor  adalah...

Diketahui vektor begin mathsize 14px style a with rightwards arrow on top equals i with hat on top plus 2 j with hat on top minus 3 k with hat on top comma space b with rightwards arrow on top equals 3 i with hat on top plus 5 k with hat on top comma space c with rightwards arrow on top equals negative 2 i with hat on top minus 4 j with hat on top plus k with hat on top comma end style dan begin mathsize 14px style u with rightwards arrow on top equals 2 a with rightwards arrow on top plus b with rightwards arrow on top minus c with rightwards arrow on top end style. Vektor begin mathsize 14px style u with rightwards arrow on top end style adalah...

  1. begin mathsize 14px style 5 i with hat on top plus 6 j with hat on top plus k with hat on top end style 

  2. size 14px 3 size 14px i with size 14px hat on top size 14px minus size 14px 2 size 14px j with size 14px hat on top size 14px minus size 14px 2 size 14px k with size 14px hat on top 

  3. begin mathsize 14px style 2 i with hat on top minus 2 j with hat on top end style 

  4. size 14px 7 size 14px i with size 14px hat on top size 14px plus size 14px 8 size 14px j with size 14px hat on top size 14px minus size 14px 2 size 14px k with size 14px hat on top 

  5. begin mathsize 14px style 7 i with hat on top minus 8 j with hat on top minus 2 k with hat on top end style 

Jawaban:

begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row cell u with rightwards arrow on top end cell equals cell 2 a with rightwards arrow on top plus b with rightwards arrow on top minus c with rightwards arrow on top end cell row blank equals cell 2 open parentheses i with hat on top plus 2 j with hat on top minus 3 k with hat on top close parentheses plus open parentheses 3 i with hat on top plus 5 k with hat on top close parentheses minus open parentheses negative 2 i with hat on top minus 4 j with hat on top plus k with hat on top close parentheses end cell row blank equals cell 2 i with hat on top plus 4 j with hat on top minus 6 k with hat on top plus 3 i with hat on top plus 5 k with hat on top plus 2 i with hat on top plus 4 j with hat on top minus k with hat on top end cell row blank equals cell 7 i with hat on top plus 8 j with hat on top minus 2 k with hat on top end cell end table end style 

Jadi, jawaban yang tepat adalah D.

1

Ruangguru

RUANGGURU HQ

Jl. Dr. Saharjo No.161, Manggarai Selatan, Tebet, Kota Jakarta Selatan, Daerah Khusus Ibukota Jakarta 12860

Coba GRATIS Aplikasi Ruangguru

Produk Ruangguru

Produk Lainnya

Hubungi Kami

Ikuti Kami

©2021 Ruangguru. All Rights Reserved