Understanding Complex Numbers Concepts
Interactive Video
•
Mathematics
•
9th - 10th Grade
•
Practice Problem
•
Hard
Thomas White
FREE Resource
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10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the imaginary unit 'i' defined as?
The square root of 0
The square root of -1
The square root of 1
The square root of 2
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following is a complex number?
0
4 + 2i
3i
5
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In a complex number 'a + bi', what is 'a' known as?
Real part
Complex part
Imaginary part
Unit part
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the form of a complex number?
a / bi
a * bi
a + bi
a - bi
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What happens when the real part of a complex number is zero?
It becomes a real number
It becomes an imaginary number
It becomes zero
It becomes a complex number
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
When are two complex numbers 'a + bi' and 'c + di' equal?
When a = c and b = d
When a = c or b = d
When a = b and c = d
When a = d and b = c
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why were complex numbers initially doubted by mathematicians?
They were not real numbers
They were difficult to prove
They had no practical applications
They were too simple
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