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13 April, 08:31

If u = then find u•u and determine whether it is a vector or a scalar

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  1. 13 April, 08:42
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    If ~v = hv1, v2, v3i and ~w = hw1, w2, w3i are vectors and c is a scalar, then (a) c~v = hcv1, cv2, cv3i (b) ~v + ~w = hv1 + w1, v2 + w2, v3 + w3i (c) ~v - ~w = hv1 - w1, v2 - w2, v3 - w3i.
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