Como resolvo:
Vetores u = (2, a, 1), v = (3, 1, −2) e w = (2a − 1, −2, 4), determinar a de modo
que: u · v = (u + v) · (v + w)
Vetores u = (2, a, 1), v = (3, 1, −2) e w = (2a − 1, −2, 4), determinar a de modo
que: u · v = (u + v) · (v + w)
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