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Diketahui titik A(2,7,8), B(-1,1,-1) dan C(0,3,2). Jika A B wakil u dan BC wakil v , maka proyeksi orthogonal vektor pada adalah .... (UN 2010)

Diketahui titik A(2,7,8), B(-1,1,-1) dan C(0,3,2). Jika  wakil dan  wakil , maka proyeksi orthogonal vektor u with rightwards arrow on top pada v with rightwards arrow on top adalah .... (UN 2010)

  1. negative 3 i with rightwards arrow on top minus 6 j with rightwards arrow on top minus 9 k with rightwards arrow on top

  2. i with rightwards arrow on top plus 2 j with rightwards arrow on top plus k with rightwards arrow on top

  3. 1 third i with rightwards arrow on top plus 2 over 3 j with rightwards arrow on top plus k with rightwards arrow on top

  4. negative 9 i with rightwards arrow on top minus 18 j with rightwards arrow on top minus 27 k with rightwards arrow on top

  5. 3 i with rightwards arrow on top plus 6 j with rightwards arrow on top plus 9 k with rightwards arrow on top

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Diketahui titik A(2,7,8), B(-1,1,-1) dan C(0,3,2). Jika wakil dan wakil , maka: Misal: adalah proyeksi orthogonal vektor pada maka: atau

Diketahui titik A(2,7,8), B(-1,1,-1) dan C(0,3,2). Jika stack A B with rightwards arrow on top wakil u with rightwards arrow on topdan stack B C with rightwards arrow on top wakil v with rightwards arrow on top, maka:

u with rightwards arrow on top equals stack A B with rightwards arrow on top equals B minus A equals open parentheses table row cell negative 1 end cell row 1 row cell negative 1 end cell end table close parentheses minus open parentheses table row 2 row 7 row 8 end table close parentheses equals open parentheses table row cell negative 3 end cell row cell negative 6 end cell row cell negative 9 end cell end table close parentheses

v with rightwards arrow on top equals stack B C with rightwards arrow on top equals C minus B equals open parentheses table row 0 row 3 row 2 end table close parentheses minus open parentheses table row cell negative 1 end cell row 1 row cell negative 1 end cell end table close parentheses equals open parentheses table row 1 row 2 row 3 end table close parentheses

Misal: z with rightwards arrow on top adalah proyeksi orthogonal vektor u with rightwards arrow on top pada v with rightwards arrow on top maka:

z with rightwards arrow on top equals fraction numerator u with rightwards arrow on top. v with rightwards arrow on top over denominator open vertical bar v with rightwards arrow on top close vertical bar squared end fraction. v with rightwards arrow on top

       equals fraction numerator left parenthesis negative 3 right parenthesis.1 plus left parenthesis negative 6 right parenthesis.2 plus left parenthesis negative 9 right parenthesis.3 over denominator open parentheses square root of 1 squared plus 2 squared plus 3 squared end root close parentheses squared end fraction open parentheses table row 1 row 2 row 3 end table close parentheses

       equals fraction numerator negative 42 over denominator 14 end fraction open parentheses table row 1 row 2 row 3 end table close parentheses

       equals negative 3 space open parentheses table row 1 row 2 row 3 end table close parentheses

       equals open parentheses table row cell negative 3 end cell row cell negative 6 end cell row cell negative 9 end cell end table close parentheses

atau z with rightwards arrow on top equals negative 3 i with rightwards arrow on top minus 6 j with rightwards arrow on top minus 9 k with rightwards arrow on top

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Diketahui vektor a = 4 i − 2 j ​ + 2 k dan vektor b = 2 i − 6 j ​ + 4 k . Proyeksi vektor ortogonal vektor a pada b adalah .... (UN 2011)

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