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Numere complexe

Authored by Nicolae Popa

Mathematics

10th Grade

Used 28+ times

Numere complexe
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10 questions

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1.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

dacă  z=5+2iz=5+2i  atunci  z=\overline{z}=  

 z= 52iz=\ -5-2i  

 z = 5 +2iz\ =\ -5\ +2i  

 z= 52iz=\ 5-2i  

 z =5+2iz\ =5+2i  

2.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

dacă  z=5+2iz=5+2i  atunci  zz=z\cdot\overline{z}=  

7

10

25

29

3.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

 (62i)(6+2i)=\left(6-2i\right)\cdot\left(6+2i\right)=  Calculați

40

36

32

4

4.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

 Calculați   (5+3i)2\left(5+3i\right)^2  

34

 25+9i25+9i  

 2+6i2+6i  

 16+30i16+30i  

5.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

 4+3i\left|4+3i\right|  Aflați

25

5

17

 17\sqrt{17}  

6.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

 i3=i^3=  

 ii  

 i-i  

1

-1

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

 i2020i^{2020}  

 ii  

 i-i  

1

 1-1  

- 2020

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