Números complexos - 2° ano EM

Quiz
•
Mathematics
•
11th Grade
•
Hard
Leandro Ferreira
Used 5+ times
FREE Resource
18 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
5 mins • 10 pts
Considere a soma dos números complexos 1 + i + i2 + i3 + ... + i83. O resultado dessa soma é
0.
1
-1
1 + i.
Answer explanation
2.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Podemos afirmar que não existe número real que seja complexo.
Certo
Errado
3.
MULTIPLE CHOICE QUESTION
5 mins • 10 pts
Um número complexo z = a + bi, em que a e b são números reais e i é a unidade imaginária (i2 = - 1 ). Para que o produto dos números complexos (x + i). (4 + 5i) seja um número real puro, o valor de x deve ser:
−4/5
4/5
−5/4
0
4.
MULTIPLE CHOICE QUESTION
5 mins • 10 pts
Determine os números reais de x e y que satisfazem a igualdade (x - 3y) – 4i = - 3 + 2yi.
x = 3 e y = 1.
x = -6 e y = -2.
x = -3 e y = -3.
x = -9 e y = -2.
5.
MULTIPLE CHOICE QUESTION
2 mins • 10 pts
O módulo do número complexo z = 3 – 4i é igual a
1
3
5
9
6.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
Sendo o número complexo z = 7 – 2i, então o valorde | z + (conjugado de Z)| é:
7
0
14
1
7.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
O módulo do conjugado do número complexo z = 3 – 6i é:
Maior que 7.
Maior que 6,5 e menor que 7.
Maior que 6 e menor que 6,5.
Maior que 5,5 e menor que 6.
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