Complex Numbers

Question 1

Which of the following is an example of a complex number that is not in the set of real numbers?

Revolt · Accepted Answer

4 + 9i

Question 2

If the complex number x = 3 + bi and |x|2 = 13, which is a possible value of b?

Revolt · Accepted Answer

2

Question 3

What is the distance from the origin to point A graphed on the complex plane below?

Revolt · Accepted Answer

StartRoot 13 EndRoot

Question 4

Which of the following is equivalent to ?

Revolt · Accepted Answer

18 – 5i

Question 5

What is the square root of -1?

Revolt · Accepted Answer

i

Question 6

If , what is the value of i 3?

Revolt · Accepted Answer

–i

Question 7

Which complex number is represented by the point graphed on the complex plane below?

Revolt · Accepted Answer

3 – 4i

Question 8

If f(x) = 1 – x, which value is equivalent to |f(i)|?

Revolt · Accepted Answer

StartRoot 2 EndRoot

Question 9

Which complex number has a distance of from the origin on the complex plane?

Revolt · Accepted Answer

4 – i

Question 10

In which quadrant is the number –14 – 5i located on the complex plane?

Revolt · Accepted Answer

III

Complex Numbers Answers