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Pertanyaan

Diketahui koordinat A ( − 4 , 2 , 3 ) , B ( 7 , 8 , − 1 ) d an C ( 1 , 0 , 7 ) . Jika AB wakil vektor u dan AC wakil vektor v , maka proyeksi pada adalah...

Diketahui koordinat . Jika AB wakil vektor dan AC wakil vektor , maka proyeksi u with rightwards arrow on top pada v with rightwards arrow on top adalah...

  1. 3 i with rightwards arrow on top minus 6 over 5 j with rightwards arrow on top plus 12 over 5 k with rightwards arrow on top

  2. 37 over 45 open parentheses 5 i with rightwards arrow on top minus 2 j with rightwards arrow on top plus 4 k with rightwards arrow on top close parentheses

  3. 3 square root of 5 i with rightwards arrow on top minus fraction numerator 6 over denominator square root of 5 end fraction j with rightwards arrow on top plus fraction numerator 12 over denominator square root of 5 end fraction k with rightwards arrow on top

  4. 9 over 55 open parentheses 5 i with rightwards arrow on top minus 2 j with rightwards arrow on top plus 4 k with rightwards arrow on top close parentheses

  5. 9 over 8 open parentheses 5 i with rightwards arrow on top minus 2 j with rightwards arrow on top plus 4 k with rightwards arrow on top close parentheses

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A. Rahmawati

Master Teacher

Mahasiswa/Alumni Universitas Pendidikan Indonesia

Jawaban terverifikasi

Jawaban

jawaban yang benar adalah A.

jawaban yang benar adalah A.

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Pembahasan

Diketahui koordinat . Jika AB wakil vektor dan AC wakil vektor , Ditanya : maka proyeksi pada adalah... Penyelesaian Proyeksi u pada v adalah:. Jadi,royeksi pada adalah. . Oleh karena itu, jawaban yang benar adalah A.

Diketahui

koordinat A left parenthesis negative 4 comma 2 comma 3 right parenthesis comma space B left parenthesis 7 comma 8 comma negative 1 right parenthesis space d a n space C left parenthesis 1 comma 0 comma 7 right parenthesis. Jika AB wakil vektor u with rightwards arrow on top dan AC wakil vektor v with rightwards arrow on top ,

Ditanya :

maka proyeksi u with rightwards arrow on top pada v with rightwards arrow on top adalah...

Penyelesaian

table attributes columnalign right center left columnspacing 0px end attributes row cell u with rightwards harpoon with barb upwards on top end cell equals cell A B space end cell row cell u with rightwards arrow on top end cell equals cell space left parenthesis 7 comma 8 comma negative 1 right parenthesis space minus space left parenthesis negative 4 comma 2 comma 3 right parenthesis end cell row cell stack space u with rightwards arrow on top space end cell equals cell space left parenthesis 11 comma 6 comma negative 4 right parenthesis space space end cell row cell v with rightwards arrow on top space end cell equals cell space A C space end cell row cell v with rightwards arrow on top space end cell equals cell space left parenthesis 1 comma 0 comma 7 right parenthesis minus left parenthesis negative 4 comma 2 comma 3 right parenthesis space end cell row cell v with rightwards arrow on top space end cell equals cell space left parenthesis 5 comma negative 2 comma 4 right parenthesis end cell end table


Proyeksi u pada v adalah:.


table attributes columnalign right center left columnspacing 0px end attributes row cell straight u subscript straight v end cell equals cell fraction numerator straight u. straight v over denominator vertical line straight v vertical line ² end fraction. straight v end cell row cell straight u subscript straight v end cell equals cell fraction numerator left parenthesis 11.5 plus 6 left parenthesis negative 2 right parenthesis plus left parenthesis negative 4 right parenthesis 4 right parenthesis over denominator left parenthesis 5 ² plus left parenthesis negative 2 right parenthesis ² plus 4 ² right parenthesis end fraction left parenthesis 5 comma negative 2 comma 4 right parenthesis end cell row cell straight u subscript straight v end cell equals cell fraction numerator left parenthesis 55 minus 12 minus 16 right parenthesis over denominator left parenthesis 25 plus 4 plus 16 right parenthesis end fraction left parenthesis 5 comma negative 2 comma 4 right parenthesis end cell row cell straight u subscript straight v end cell equals cell 27 over 45 left parenthesis 5 comma negative 2 comma 4 right parenthesis end cell row cell straight u subscript straight v end cell equals cell 3 over 5 left parenthesis 5 comma negative 2 comma 4 right parenthesis end cell row cell straight u subscript straight v end cell equals cell left parenthesis 3 comma negative 6 over 5 comma 12 over 5 right parenthesis end cell row cell straight u subscript straight v end cell equals cell left parenthesis 3 straight i comma negative 6 over 5 straight j comma 12 over 5 straight k right parenthesis end cell end table

Jadi, royeksi u with rightwards arrow on top pada v with rightwards arrow on top adalah.3 i with rightwards arrow on top minus 6 over 5 j with rightwards arrow on top plus 12 over 5 k with rightwards arrow on top.

Oleh karena itu, jawaban yang benar adalah A.

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

5

XMIPA2 Athariq Adam Alamshah

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