Kompleksni brojevi- ispravak

Kompleksni brojevi- ispravak

10th Grade

10 Qs

quiz-placeholder

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Kompleksni brojevi- ispravak

Kompleksni brojevi- ispravak

Assessment

Quiz

Mathematics

10th Grade

Easy

Created by

Aleksandra Kos

Used 5+ times

FREE Resource

10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Odredi realne brojeve a i b iz jednakosti: ab+5i=1+(a+b)ia-b+5i=1+\left(a+b\right)i  

 a=2, b=4a=-2,\ b=4  

 a=3, b=2a=3,\ b=-2  

 a=3, b=2a=3,\ b=2  

 a=3, b=2a=-3,\ b=-2  

2.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Izračunaj z+w ako je ; z=12+i,   w=113iz=-\frac{1}{2}+i,\ \ \ w=1-\frac{1}{3}i  

 12+23i\frac{1}{2}+\frac{2}{3}i  

 32+43i-\frac{3}{2}+\frac{4}{3}i  

 16+76i-\frac{1}{6}+\frac{7}{6}i  

 1223i\frac{1}{2}-\frac{2}{3}i  

3.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Izračunaj:  (12i)2\left(1-2i\right)^2  

 3+4i-3+4i  

 34i3-4i  

 34i-3-4i  

 2+3i2+3i  

4.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Koliko je: 1+i3+i6+i9+i12+i151+i^3+i^6+i^9+i^{12}+i^{15}  ?

 1i-1-i  

 1+5i1+5i  

 1+i1+i  

 1i1-i  

5.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Odredi  z\overline{z}  ako je  z=(2i)(1+2i)z=\left(2-i\right)\left(1+2i\right)  

 4+3i4+3i  

 43i4-3i  

 4+3i-4+3i  

 2i2-i  

6.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Odredi Re zRe\ z  ako je  z=i357(12i)(3+i)z=\frac{i^{357}}{\left(1-2i\right)\left(3+i\right)}  

 110i\frac{1}{10}i  

 110i-\frac{1}{10}i  

 110\frac{1}{10}  

 110-\frac{1}{10}  

7.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Izračunaj:  17i3i\frac{1-7i}{3-i} 

 12i1-2i  

 1+2i1+2i  

 i-i  

 3i3-i  

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