1 ) Si z=4i−3, alors a ) Im(z)=-3 d ) −z=4i+3 b ) Im(z)=4 e ) iz=4−3i c ) z=4i+3 f ) Re(z)=-3

Exercices sur les Nombres Complexes

Quiz
•
Mathematics
•
12th Grade
•
Hard

youssef saad
FREE Resource
33 questions
Show all answers
1.
MULTIPLE SELECT QUESTION
30 sec • 1 pt
Re(z)=-3
Im(z)=-3
z=4i+3
Im(z)=4
−z=4i+3
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
2 ) Si z=−3i, alors z est un imaginaire pur.
Vrai
Faux
3.
OPEN ENDED QUESTION
3 mins • 1 pt
3 ) Si z=−2, alors iz est un imaginaire pur.
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4.
MULTIPLE SELECT QUESTION
30 sec • 1 pt
4 ) Si z=a+ib ( où a∈ℝ, b∈ℝ ), alors a ) Re(z+3)=Re(z)+3 c ) Im(z²)=b² b ) Re(iz)=b d ) Im(2z)=2b
Re(z+3)=Re(z)+3
Re(iz)=b
Im(z²)=b²
Im(2z)=2b
5.
OPEN ENDED QUESTION
3 mins • 1 pt
1 ) Déterminer les parties réelle et imaginaire de : 3i ; −5 ; 0 ; i³ ; 3i−2
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6.
OPEN ENDED QUESTION
3 mins • 1 pt
2 ) Soit x∈ℝ et z=(4−2x)+i(5−x). a ) Pour quelle valeur de x, z est-il réel ? b ) Pour quelle valeur de x, z est-il imaginaire pur ?
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7.
OPEN ENDED QUESTION
3 mins • 1 pt
1 ) Déterminer la forme algébrique des nombres : z₁=3+5−i+2(8−5i) z₂=3(−2+5i)(3i−1)
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