
Numere complexe - forma algebrică
Authored by Ignat Cristina
Mathematics
10th Grade

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8 questions
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1.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
1
11 - 10 i
13 - 10 i
11 + 10 i
nici unul dintre celelalte răspunsuri nu este corect
2.
MULTIPLE SELECT QUESTION
3 mins • 1 pt
Dacă x și y sunt numere reale astfel încât 2 x + (5 y - 2) i = - 8, atunci:
Dacă x și y sunt numere reale astfel încât 2 x + (5 y - 2) i = - 8, atunci:
x = 4
x = 0,4
y = 4
y = 0,4
x = - 4
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Calculați modulul numărului complex 12 - 5 i
7
17
13
5
12
4.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
1
-1
-1 + i
0
i
5.
MULTIPLE SELECT QUESTION
3 mins • 1 pt
are partea reală 3
are partea reală 2
are modulul 2
are conjugatul 2 + 2 i
este egal cu 2 - i
6.
MULTIPLE SELECT QUESTION
2 mins • 1 pt
este real
este pur imaginar
este egal cu conjugatul său
este egal cu opusul conjugatului său
nici unul dintre celelalte răspunsuri nu este corect
7.
MULTIPLE SELECT QUESTION
3 mins • 1 pt
z^3 = 1
z^10 = z
z^3 = -1
z este număr real
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