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16 March, 07:45

Find the Dot Product if u=8i-7j and v=3i-4j?

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  1. 16 March, 07:49
    0
    52

    Step-by-step explanation:

    If u = (a1i+b1j) = (a1, b1) and v = (a2i+b2j) = (a2, b2), then the dot (scalar) product is:

    u. v = (a1, b1). (a2, b2)

    a1b1+a2b2

    u. v = (8,-7). (3,-4)

    (8) (3) + (-7) (-4)

    24+28=52
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