Question

What is - 4i ^ 19, simplify

Answer 1

Explanation:

`i =√(-1) \\i^(2)= -1\\\\i^(3)= -i\\\\i^(4)= 1\\\\i^(5)= i\\`

the cycle repeats every 4

19/4 = 4.75

16 is divisible by 4 plus three more

thus
`i^(19) = -i` but you problem has a minus in front so "i"