จำนวนเชิงซ้อน
Quiz
•
Mathematics
•
10th - 11th Grade
•
Practice Problem
•
Hard
นายณัฎฐ์ ทิพย์บุณยาพร
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20 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
ตัวผกผันของการบวกของ (1+i)2 ตรงกับข้อใด
4
-4
4i
-4i
2.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
ตัวผกผันการคูณของ 2(-1+3i) ตรงกับข้อใด
1/20 +3i/20
1/20 - 3i/20
-1/20 + 3i/20
-1/20 - 3i/20
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
ถ้า z1 = 3 + 7i และ z2 = 5 - 2i แล้วสังยุคของ z1 + z2 ตรงกับข้อใด
8 + 5i
8 - 5i
2 + 5i
2 - 5i
4.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
สังยุคของ 2( 1 + 5i) + (7 - 12i) เท่ากับข้อใด
9 + 2i
9 - 2i
8 + 2i
8 - 2i
5.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
จำนวนเชิงซ้อน z ที่สอดคล้องกับสมการ
(4 + 3i)z = -7 + 5i
(13 - 4i) / 25
(13 + 4i) / 25
-(13 - 4i) / 25
-(13 + 4i) / 25
6.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
ค่าสัมบูรณ์ของ (7 + i)(2 - i) ตรงกับข้อใด
5
50
5√10
10√5
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
ค่าสัมบูรณ์ของ z เมื่อ (1 - √3i)z = 3 + 4i เท่ากับข้อใด
1
1.5
2
2.5
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