Let vectors u = i − j + 2k, v = 3i + j − k, w = i + 5j + 2k be given.
a) Find u • v.
b) Find u × v.
Find |u|.
e) Find u × (2v + 3w).
f) Find u • v × w and v × u • w.
g) Find u x (v x w).
h) Find the direction cosines of u.
i) Find compwv.
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