Hobbs Frank
04/08/2024 · Primary School
4.(UEPB) 0 produto dos números complexos \( (3-1) \cdot(x+2 y i) \) é un número real quando o ponto \( P(x, y) \) está sobre a reta de equaçio \( \begin{array}{ll}\text { j) } 6 x+y=0 & \text { d) } 6 y-x=0 \\ \text { b) } 6 x-y=0 & \text { e) } 3 y-x=0 \\ \text { () } x+6 y=0 & \text { - }\end{array} \)
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Para o produto ser real, a equação \( 6y - x = 0 \) deve ser satisfeita.
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