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Producto Interno y sus propiedades
Producto Interno ,[object Object]
Propiedades ,[object Object],u = 4i + 6j ( 4i + 6j ) • ( 4i + 6j ) > 0 si: u  Є  V u u (4)(4)  +  (6)(6) > 0 i j 16  +  36 > 0 52 > 0
[object Object],u = 4i + 6j {u,v,w  Є  V} v = 3i - 7j w = i + j (4i + 6j) • [ (3i - 7j) + (i + j) ]=[ (4i + 6j) • (3i - 7j) ]+[ (4i + 6j) •   (i + j) ] (4i + 6j) • [ 3i - 7j + i + j ]=[ (4i + 6j) • (3i - 7j) ]+[ (4i + 6j) •   (i + j) ] (4i + 6j) • [ 4i - 6j ]=[ (4i + 6j) • (3i - 7j) ]+[ (4i + 6j) •   (i + j) ] (4) (4) + (6) (-6) =[ (4) (3)   +  (6) (-7) ]+[ (4) (1)   +  (6) (1) ] 16  +  (-36)=[12 + (-42)]+[4 + 6] -20 = -30 + 10 -20 = -20 i j i i j j
[object Object],u = 4i + 6j v = 3i - 7j w = i + j i j i j -j -j (u•v)+(u•w)
(u+v)(w)=(u •w)+(v•w) u = 4i + 6j {u,v,w  Є  V} v = 3i - 7j w = i + j [ (4i + 6j) + (3i - 7j) ] • (i + j) =[ (4i + 6j) • (i + j) ]+[ (3i - 7j) • (i + j) ] (7) (1) + (-1) (1) =10 + (-4) 7  +  (-1)=10 - 4 7-1 = 6 6 = 6 [ 4i + 6j + 3i - 7j ] • (i + j) =[ (4) (1)   +  (6) (1) ]+[ (3) (1)   +  (-7) (1) ] [ 7i – j ] • (i + j) =[4 + 6]+[3 + (-7)] i j i i j j
u = 4i + 6j v = 3i - 7j w = i + j i j -j i j -j (u+v)(w) (u •w)+(v•w)
[object Object],u = 4i + 6j {u,v  Є  V} v = 3i - 7j (4i + 6j) • (3i - 7j)  =  (4i + 6j) • (3i - 7j) (4i + 6j) • (3i - 7j)  =  (4i - 6j) • (3i + 7j) (4) (3)   +  (6) (-7)  = (4) (3)  +  (-6) (7) 12 + (-42) = 12 + (-42) -30 = -30 i j i j 12 - 42 = 12 - 42
u = 4i + 6j v = 3i - 7j u = 4i - 6j v = 3i + 7j i j -j i j -j
u = 4i + 6j v = 3i - 7j u •v  = -30 =  u •u =  (4i + 6j)(4i + 6j) =  (4)(4)+(6)(6) =  16+36 =  52 =  (3i - 7j)(3i - 7j) =  (3)(3)+(-7)(-7) =  9+49 =  58 cos  θ  =  -30  =  -30 52  58  3016  θ  = cos -1 (-0.54) θ  = 123.11° cos  θ  =  u  •  v u  v | | | | | | | | u | | | | u | | | | u | | | | u | | | | u | | | | v | | | | v | | | | v | | | | v | | | |
cos  θ  =  -30  =  -30 52  58  3016  θ  = cos -1 (-0.54) θ  = 123.11°
[object Object],u = 4i + 6j {u,v  Є  V} v = 3i - 7j (4i + 6j) • [ ( ½ ) (3i - 7j) ] = ( ½ )[ (4i + 6j) • (3i - 7j) ] (4i + 6j) • (3/2i – 7/2j)  =  ( ½ ) [ (4i - 6j) • (3i + 7j) ] (4) (3/2)   +  (6) (-7/2)  = ( ½ ) [ (4) (3)  +  (-6) (7) ] 12/6 + (-42/2) =  ( ½ ) (12 + (-42)) -15 = -15 i j i j 6 - 21 =  ( ½ )   (12 – 42) α  = 1/2
(u •  v) = 0 u = 3i - 1j {u,v  Є  V} v = 2i + 6j (3i - 1j) • (2i + 6j)  = 0 (3) (2)   +  (-1) (6)  = 0 6 + (-6) = 0 Resultado = 0 ES UN VECTOR ORTOGONAL i j 6 - 6 = 0
=  (3i - j)(3i – j) =  (3)(3)+(1)(1) =  9+1 =  10 =  40 d =  10 + 40 d =  50 Teorema  de Pitágoras u | | | | u | | | | u | | | | u | | | | v | | | |

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Espacios Con Producto Interno Resumen

  • 1. Producto Interno y sus propiedades
  • 2.
  • 3.
  • 4.
  • 5.
  • 6. (u+v)(w)=(u •w)+(v•w) u = 4i + 6j {u,v,w Є V} v = 3i - 7j w = i + j [ (4i + 6j) + (3i - 7j) ] • (i + j) =[ (4i + 6j) • (i + j) ]+[ (3i - 7j) • (i + j) ] (7) (1) + (-1) (1) =10 + (-4) 7 + (-1)=10 - 4 7-1 = 6 6 = 6 [ 4i + 6j + 3i - 7j ] • (i + j) =[ (4) (1) + (6) (1) ]+[ (3) (1) + (-7) (1) ] [ 7i – j ] • (i + j) =[4 + 6]+[3 + (-7)] i j i i j j
  • 7. u = 4i + 6j v = 3i - 7j w = i + j i j -j i j -j (u+v)(w) (u •w)+(v•w)
  • 8.
  • 9. u = 4i + 6j v = 3i - 7j u = 4i - 6j v = 3i + 7j i j -j i j -j
  • 10. u = 4i + 6j v = 3i - 7j u •v = -30 = u •u = (4i + 6j)(4i + 6j) = (4)(4)+(6)(6) = 16+36 = 52 = (3i - 7j)(3i - 7j) = (3)(3)+(-7)(-7) = 9+49 = 58 cos θ = -30 = -30 52 58 3016 θ = cos -1 (-0.54) θ = 123.11° cos θ = u • v u v | | | | | | | | u | | | | u | | | | u | | | | u | | | | u | | | | v | | | | v | | | | v | | | | v | | | |
  • 11. cos θ = -30 = -30 52 58 3016 θ = cos -1 (-0.54) θ = 123.11°
  • 12.
  • 13. (u • v) = 0 u = 3i - 1j {u,v Є V} v = 2i + 6j (3i - 1j) • (2i + 6j) = 0 (3) (2) + (-1) (6) = 0 6 + (-6) = 0 Resultado = 0 ES UN VECTOR ORTOGONAL i j 6 - 6 = 0
  • 14. = (3i - j)(3i – j) = (3)(3)+(1)(1) = 9+1 = 10 = 40 d = 10 + 40 d = 50 Teorema de Pitágoras u | | | | u | | | | u | | | | u | | | | v | | | |