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Pertanyaan

Perhatikan vektor posisi O A , OB d an OC pada diagram kartesius berikut ini. Proyeksi vektor ortogonal A B k e OC adalah ….

Perhatikan vektor posisi  pada diagram kartesius berikut ini.

Proyeksi vektor ortogonal  adalah ….

  1. begin mathsize 14px style open parentheses table row cell negative 1 end cell row 5 row 4 end table close parentheses square root of 35 end style 

  2. begin mathsize 14px style open parentheses table row cell negative 3 end cell row 4 row 4 end table close parentheses square root of 35 end style 

  3. begin mathsize 14px style open parentheses table row cell negative 2 end cell row 5 row 4 end table close parentheses square root of 45 end style 

  4. begin mathsize 14px style open parentheses table row 2 row 4 row 5 end table close parentheses square root of 45 end style 

  5. begin mathsize 14px style open parentheses table row 3 row 4 row 5 end table close parentheses square root of 45 end style 

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P. Tessalonika

Master Teacher

Mahasiswa/Alumni Universitas Negeri Medan

Jawaban terverifikasi

Pembahasan

Dari gambar diagram kartesius di atas diperoleh, Maka, Sehingga, Proyeksi vektor ortogonal adalah .

Dari gambar diagram kartesius di atas diperoleh,

begin mathsize 14px style stack O A with rightwards arrow on top equals stack 2 i with hat on top minus 5 j with hat on top plus 3 k with hat on top stack O B with rightwards arrow on top equals i with hat on top plus 6 j with hat on top stack O C with rightwards arrow on top equals negative 2 i with hat on top plus 5 j with hat on top plus 4 k with hat on top end style 

Maka,

begin mathsize 14px style stack A B with rightwards arrow on top equals stack O B with rightwards arrow on top minus stack O A with rightwards arrow on top equals open parentheses table row 1 row 6 row 0 end table close parentheses minus open parentheses table row 2 row cell negative 5 end cell row 3 end table close parentheses equals open parentheses table row cell negative 1 end cell row 11 row cell negative 3 end cell end table close parentheses end style 

Sehingga,

begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row cell Proyeksi straight stack A B with rightwards arrow on top straight pada straight stack O C with rightwards arrow on top straight end cell equals cell open parentheses fraction numerator stack A B with rightwards arrow on top times stack O C with rightwards arrow on top over denominator open vertical bar stack O C with rightwards arrow on top close vertical bar squared end fraction close parentheses stack O C with rightwards arrow on top end cell row blank equals cell open parentheses fraction numerator open parentheses table row cell negative 1 end cell row 11 row cell negative 3 end cell end table close parentheses times open parentheses table row cell negative 2 end cell row 5 row 4 end table close parentheses over denominator open parentheses square root of open parentheses negative 2 close parentheses squared plus 5 squared plus 4 squared end root close parentheses squared end fraction close parentheses open parentheses table row cell negative 2 end cell row 5 row 4 end table close parentheses end cell row blank equals cell open parentheses fraction numerator 2 plus 55 minus 12 over denominator square root of 4 plus 25 plus 16 end root end fraction close parentheses open parentheses table row cell negative 2 end cell row 5 row 4 end table close parentheses end cell row blank equals cell open parentheses fraction numerator 45 over denominator square root of 45 end fraction close parentheses open parentheses table row cell negative 2 end cell row 5 row 4 end table close parentheses end cell row blank equals cell open parentheses table row cell negative 2 end cell row 5 row 4 end table close parentheses square root of 45 end cell end table end style 

Proyeksi vektor ortogonal undefined adalah undefined.

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