Numere complexe S

Numere complexe S

10th Grade

7 Qs

quiz-placeholder

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Numere complexe S

Numere complexe S

Assessment

Quiz

Mathematics

10th Grade

Practice Problem

Hard

Created by

Nicolae Popa

Used 4+ times

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7 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

( 2 + 3 i ) ( 1 - i ) =

5 + 2 i

5 - 2 i

4 + 3i

4 - 3 i

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Care este opusul numarului z = 4 - 3 i ?

4 + 3 i

- 4 - 3 i

- 4 + 3 i

- 4 - 3 i

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Care este conjugatul numarului z = 4 - 3 i ?

4 + 3 i

- 4 - 3 i

- 4 + 3 i

- 4 - 3 i

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

 Care este partea reala a numarului complex z = 2(3+4i) 5i?Care\ este\ partea\ reala\ a\ numarului\ complex\ z\ =\ 2\cdot\left(3+4i\right)\ -5i?  

4

- 5

6

3 i

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

 Care este partea imaginara a numarului complex z = 2(3+4i) 5i?Care\ este\ partea\ imaginara\ a\ numarului\ complex\ z\ =\ 2\cdot\left(3+4i\right)\ -5i?  

4 i

3 i

6

- 3 i

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

 Calculati z = i +i 2+i3+i4Calculati\ z\ =\ i\ +i\ ^2+i^3+i^4  

1

i

0

1 + i

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

 Numarul z = (2+a)+ (a3)i este numar real pentru:Numarul\ z\ =\ \left(2+a\right)+\ \left(a-3\right)\cdot i\ este\ numar\ real\ pentru:  

a = 2

a =  - 3

a = - 2

a =  3