
Số phức
Quiz
•
Fun
•
9th - 12th Grade
•
Practice Problem
•
Easy
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25 questions
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1.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Tìm số phức z thỏa mãn 2i.z = - 10 + 6i
3 + 5i
-3 + 5i
3 - 5i
- 3 - 5i
2.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
2 + i
-2 + i
-1 + 2i
1 + 2i
3.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Cho hai số phức z = 1 + 2i, w = 3 - i. Tính tổng của hai số phức đó
4 - i
4 + 3i
4 + i
4 - 3i
4.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Gọi z1, z2, z3, z4 là 4 nghiệm phức của phương trình z4 - 2z2 - 8 = 0. Trên mặt phẳng tọa độ, gọi A, B, C, D lần lượt là 4 điểm biểu diễn cho 4 nghiệm đó. Tính giá trị biểu thức P = OA + OB + OC + OD
4
5.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Tìm các số thực x, y thỏa mãn: (x + 2y) + (2x - 2y)i = 7 - 4i
x = 1, y = 3
x = -1, y = -3
6.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
-2a+b
-b-2a
7.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
5
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