
Números Complexos - FVA 27-04-2020
Authored by Pedro Amieiro
Mathematics
12th Grade
Used 3+ times

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12 questions
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1.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
Em C, conjunto dos números complexos, considera . Qual dos números complexos seguintes é uma das
raízes de índice seis de z?
2.
OPEN ENDED QUESTION
15 mins • Ungraded
Em C, conjunto dos números complexos, seja . Determina os números complexos z que são solução
da equação .
Escreve esses números na forma trigonométrica (por exemplo: e^(-i pi/6)
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3.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
Em C, conjunto dos números complexos, considera e .
Sabe-se que
é uma raiz quarta de um certo número complexo w. w pode ser:
4.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
Em C, conjunto dos números complexos, considera . Determina o menor número natural n para o qual é um número real negativo.
1
8
6
4
5.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
1. Na figura ao lado, o pentágono regular [ABCDE] inscrito numa circunferência de centro na origem e raio 1.
Sabe-se que C pertence ao semieixo real negativo.
Seja z o número complexo cujo afixo é o ponto A.
Qual é o valor de z5 ?
6.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Em C, conjunto dos números complexos, seja .
Sabe-se que z é uma das raízes de índice 6 de um certo número complexo w.
Considera, no plano complexo, o polígono cujos vértices são as imagens geométricas das raízes de índice 6 desse número complexo w.
Qual é o perímetro do polígono?
42
36
30
24
7.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
Em C, conjunto dos números complexos, considera o número complexo .
A área do polígono cujos vértices, no plano complexo, são as imagens
geométricas das raízes quartas de z, é.
1
2
4
8
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