Sejam u with rightwards arrow on top e v with rightwards arrow on top dois vetores definidos por u with rightwards arrow on top equals open parenth...

Sejam u with rightwards arrow on top e v with rightwards arrow on top dois vetores definidos por u with rightwards arrow on top equals open parentheses table row i i i end table close parentheses e v with rightwards arrow on top equals open parentheses table row cell 2 i end cell cell 3 i end cell cell 4 i end cell end table close parentheses, em que i é o número imaginário (i equals square root of negative 1 end root). Selecione o item que apresenta o vetor w with rightwards arrow on top tal que w with rightwards arrow on top space equals space u with rightwards arrow on top cross times v with rightwards arrow on top. A) w with rightwards arrow on top equals open parentheses table row cell negative i end cell cell negative 2 i end cell cell negative i end cell end table close parentheses B) w with rightwards arrow on top equals open parentheses table row cell negative 2 i end cell cell 2 i end cell cell negative 2 i end cell end table close parentheses C) w with rightwards arrow on top equals open parentheses table row cell negative 1 end cell cell 2 i end cell cell negative i end cell end table close parentheses D) w with rightwards arrow on top equals open parentheses table row cell negative 1 end cell 2 cell negative 1 end cell end table close parentheses E) w with rightwards arrow on top equals open parentheses table row cell negative i end cell 2 cell negative i end cell end table close parentheses