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14 September, 12:57

If v = 5i + 4j and w = 6i - 9j, find each of the following vectors:

a. v + w

b. V - w.

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Answers (1)
  1. 14 September, 14:38
    0
    a. = 11i - 5j

    b. = - i + 13j

    Step-by-step explanation:

    from the question we were given

    v = 5i + 4j

    w = 6i - 9j

    we are to find

    a. v + w

    b. v - w

    a) v + w

    (5i + 4j) + (6i - 9j)

    5i + 4j + 6i - 9j

    collect the like terms

    11i - 5j

    b) v - w

    (5i + 4j) - (6i - 9j)

    5i + 4j - 6i + 9j

    collect the like terms

    5i - 6i + 4j + 9j

    -i + 13j
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