u with rightwards arrow on top, v wu with rightwards arrow on top, v with rightwards arrow on top e w with rightwards arrow on top são três vetores...
u with rightwards arrow on top, v wu with rightwards arrow on top, v with rightwards arrow on top e w with rightwards arrow on top são três vetores tais que w with rightwards arrow on top space equals u with rightwards arrow on top space cross times space v with rightwards arrow on top space, isto é, w with rightwards arrow on top é o produto vetorial de u with rightwards arrow on tope v with rightwards arrow on top. Diante dessas informações, assinale a alternativa correta. A) open vertical bar w with rightwards arrow on top close vertical bar equals open vertical bar u with rightwards arrow on top close vertical bar plus open vertical bar v with rightwards arrow on top close vertical bar B) w with rightwards arrow on top é não nulo e perpendicular a u with rightwards arrow on tope v with rightwards arrow on top somente se u with rightwards arrow on tope v with rightwards arrow on top não tiverem a mesma direção. C) open vertical bar w with rightwards arrow on top close vertical bar equals open vertical bar u with rightwards arrow on top close vertical bar cross times open vertical bar v with rightwards arrow on top close vertical bar D) Quaisquer que sejam u with rightwards arrow on tope v with rightwards arrow on top, w with rightwards arrow on top é, necessariamente, perpendicular a u with rightwards arrow on tope v with rightwards arrow on top, e open vertical bar w with rightwards arrow on top close vertical bar greater than 0. E) u with rightwards arrow on top, v with rightwards arrow on top e w with rightwards arrow on top são, necessariamente, perpendiculares entre si.ith rightwards arrow on top e w with rightwards arrow on top são três vetores tais que w with rightwards arrow on top space equals u with rightwards arrow on top space cross times space v with rightwards arrow on top space, isto é, w with rightwards arrow on top é o produto vetorial de u with rightwards arrow on tope v with rightwards arrow on top. Diante dessas informações, assinale a alternativa correta. A) open vertical bar w
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Ed 
Vamos analisar cada alternativa: A) |w| = |u| + |v| B) w é não nulo e perpendicular a u e v somente se u e v não tiverem a mesma direção. C) |w| = |u x v| D) w é perpendicular a u e v, e |w| > 0. E) u, v e w são necessariamente perpendiculares entre si. Com base nas informações fornecidas, a alternativa correta é a letra C) |w| = |u x v|.
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