Iklan

Iklan

Pertanyaan

Diketahui vektor a = ( 2 4 ​ ) , vektor b = ( − 5 − 7 ​ ) , jika c = 2 a + b maka hasil dari a − 3 b + 2 c adalah ....

Diketahui vektor , vektor , jika  maka hasil dari  adalah ....

  1. begin mathsize 14px style open parentheses table row 27 row 15 end table close parentheses end style 

  2. begin mathsize 14px style open parentheses table row cell negative 27 end cell row cell negative 15 end cell end table close parentheses end style 

  3. begin mathsize 14px style open parentheses table row cell negative 27 end cell row 15 end table close parentheses end style 

  4. begin mathsize 14px style open parentheses table row 15 row 27 end table close parentheses end style 

  5. begin mathsize 14px style open parentheses table row 15 row cell negative 27 end cell end table close parentheses end style 

Iklan

D. Rajib

Master Teacher

Mahasiswa/Alumni Universitas Muhammadiyah Malang

Jawaban terverifikasi

Jawaban

jawaban yang benar adalah D.

jawaban yang benar adalah D.

Iklan

Pembahasan

Diketahui vektor , vektor , dan . Maka: Sehingga: Jadi, jawaban yang benar adalah D.

Diketahui vektor begin mathsize 14px style straight a with rightwards arrow on top equals open parentheses table row 2 row 4 end table close parentheses end style, vektor begin mathsize 14px style straight b with rightwards arrow on top equals open parentheses table row cell negative 5 end cell row cell negative 7 end cell end table close parentheses end style, dan begin mathsize 14px style straight c with rightwards arrow on top equals 2 straight a with rightwards arrow on top plus straight b with rightwards arrow on top end style. Maka:

begin mathsize 14px style straight c with rightwards arrow on top equals 2 straight a with rightwards arrow on top plus straight b with rightwards arrow on top straight c with rightwards arrow on top equals 2 open parentheses table row 2 row 4 end table close parentheses plus open parentheses table row cell negative 5 end cell row cell negative 7 end cell end table close parentheses straight c with rightwards arrow on top equals open parentheses table row 4 row 8 end table close parentheses plus open parentheses table row cell negative 5 end cell row cell negative 7 end cell end table close parentheses straight c with rightwards arrow on top equals open parentheses table row cell negative 1 end cell row 1 end table close parentheses end style 

Sehingga:

 begin mathsize 14px style straight a with rightwards arrow on top minus 3 straight b with rightwards arrow on top plus 2 straight c with rightwards arrow on top equals open parentheses table row 2 row 4 end table close parentheses minus 3 open parentheses table row cell negative 5 end cell row cell negative 7 end cell end table close parentheses plus 2 open parentheses table row cell negative 1 end cell row 1 end table close parentheses space space space space space space space space space space space space space space space space space space space equals open parentheses table row 2 row 4 end table close parentheses minus open parentheses table row cell negative 15 end cell row cell negative 21 end cell end table close parentheses plus open parentheses table row cell negative 2 end cell row 2 end table close parentheses space space space space space space space space space space space space space space space space space space space equals open parentheses table row 15 row 27 end table close parentheses end style 

Jadi, jawaban yang benar adalah D.

Perdalam pemahamanmu bersama Master Teacher
di sesi Live Teaching, GRATIS!

3

Iklan

Iklan

Pertanyaan serupa

Diketahui a = ⎝ ⎛ ​ − 2 5 − 3 ​ ⎠ ⎞ ​ , b = ⎝ ⎛ ​ 4 − 6 4 ​ ⎠ ⎞ ​ , dan c = ⎝ ⎛ ​ − 4 11 3 ​ ⎠ ⎞ ​ . Tentukan: c. 4 c − 3 a + 5 b

4

4.9

Jawaban terverifikasi

RUANGGURU HQ

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

Coba GRATIS Aplikasi Roboguru

Coba GRATIS Aplikasi Ruangguru

Download di Google PlayDownload di AppstoreDownload di App Gallery

Produk Ruangguru

Hubungi Kami

Ruangguru WhatsApp

+62 815-7441-0000

Email info@ruangguru.com

[email protected]

Contact 02140008000

02140008000

Ikuti Kami

©2024 Ruangguru. All Rights Reserved PT. Ruang Raya Indonesia