Repita as partes (a)–(d) do Exercício com os vetores u = (–2, 6, 2, 1), v = (–3, 0, 8, 0) e w = (9, 1, –6, –6).
Exercício
Sejam u = (–2, 0, 4), v = (3, –1, 6) e w = (2, –5, –5). Calcule
(a) 3v – 2u
(b) ||u + v + w||
(c) a distância ente –3u e v + 5w.
(d) projwu
(e) u · (v × w)
(f) (–5v + w) × ((u · v)w)
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