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Pertanyaan

Perhatikan vektor-vektor berikut. Panjang proyeksi u ⇀ pada v ⇀ adalah ....

Perhatikan vektor-vektor berikut.

Panjang proyeksi  pada  adalah ....

  1. 6 square root of 5 

  2. 5 square root of 5 

  3. 6 over 5 square root of 5 

  4. square root of 5 

  5. 6 over 5 

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R. RGFLLIMA

Master Teacher

Jawaban terverifikasi

Jawaban

Jawaban yang benar adalah C

Jawaban yang benar adalah C

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Pembahasan

Proyeksi vektor. Panjang proyeksi pada adalah Dengan: Maka: Jadii,Panjang proyeksi pada adalah Oleh karena itu, Jawaban yang benar adalah C

Proyeksi vektor.

Panjang proyeksi u with rightwards harpoon with barb upwards on top pada v with rightwards harpoon with barb upwards on top adalah open vertical bar c with rightwards harpoon with barb upwards on top close vertical bar equals fraction numerator u with rightwards harpoon with barb upwards on top times v with rightwards harpoon with barb upwards on top over denominator open vertical bar v with rightwards harpoon with barb upwards on top close vertical bar end fraction 

Dengan:

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 open parentheses table row 4 row 1 end table close parentheses end cell row cell v with rightwards harpoon with barb upwards on top end cell equals cell open parentheses table row 1 row 2 end table close parentheses end cell row cell u with rightwards harpoon with barb upwards on top times v with rightwards harpoon with barb upwards on top end cell equals cell 4 times 1 plus 1 times 2 end cell row blank equals cell 4 plus 2 end cell row blank equals 6 row cell open vertical bar v with rightwards harpoon with barb upwards on top close vertical bar end cell equals cell square root of 1 squared plus 2 squared end root end cell row blank equals cell square root of 1 plus 4 end root end cell row blank equals cell square root of 5 end cell end table  

Maka:

table attributes columnalign right center left columnspacing 0px end attributes row cell open vertical bar c with rightwards harpoon with barb upwards on top close vertical bar end cell equals cell fraction numerator u with rightwards harpoon with barb upwards on top times v with rightwards harpoon with barb upwards on top over denominator open vertical bar v with rightwards harpoon with barb upwards on top close vertical bar end fraction end cell row blank equals cell fraction numerator 6 over denominator square root of 5 end fraction end cell row blank equals cell 6 over 5 square root of 5 end cell end table 

Jadii, Panjang proyeksi u with rightwards harpoon with barb upwards on top pada v with rightwards harpoon with barb upwards on top adalah 6 over 5 square root of 5. 

Oleh karena itu, Jawaban yang benar adalah C

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