7.5 Imaginary Number

Question 1

How is the imaginary number notated

Answer 1

i

Question 2

How is a complex number written in standard form?

Answer 2

a + bi

Question 3

When is an imaginary number (a + bi) considered to be a pure imaginary number?

Answer 3

where a = 0 and b ≠ 0

Question 4

i

Answer 4

square root of -1

Question 5

i²

Answer 5

-1

Question 6

i³

Answer 6

-i

Question 7

i⁴

Answer 7

1