Imaginary numbers

Question 1

square root of -1

Answer 1

i

Question 2

i^2

Answer 2

-1

Question 3

i^3

Answer 3

-i

Question 4

i^4

Answer 4

1

Question 5

r=1

Answer 5

i

Question 6

r=2

Answer 6

-1

Question 7

r= 3

Answer 7

-i

Question 8

r=0

Answer 8

1