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4 December, 14:02

Compute utimes u, vtimes u, and StartFraction v times u Over u times u EndFraction using the vectors uequals[Start 2 By 1 Matrix 1st Row 1st Column negative 1 2nd Row 1st Column 4 EndMatrix ]and vequals[Start 2 By 1 Matrix 1st Row 1st Column 7 2nd Row 1st Column 5 EndMatrix ]

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  1. 4 December, 15:45
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    u•u = 17

    u•v = 13

    v•u = u•v = 17

    v•u/u•u = 13/17

    Step-by-step explanation:

    Given 2 column matrices

    u = [-1 4] and v = [7 5]

    Note that when computing product, we will multiply component wise.

    To compute u times u, we will take the dot product of both column matrix.

    u•u = [-1 4] • [-1 4]

    u•u = (-1) (-1) + (4) (4)

    u•u = 1+16

    u•u = 17

    To compute u times v, we will take the dot product of column matrix u and column matrix v.

    u•v = [-1 4] • [7 5]

    u•v = (-1) (7) + (4) (5)

    u•v = - 7+20

    u•v = 13

    v•u/u•u can be gotten by simply substituting the resulting values.

    v•u/u•u = 13/17
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