Question

Use the identity i^2 = -1 to compute the powers of i and complete the table.

Answer 1

i^2= -1
i^3 = i^2 * i = -i
i ^4 = i ^2 * i ^2 = -1*-1= 1
i ^5= i^4*i = i
This pattern continues
-1, -i, 1, i, -1, -i, 1, i.......

Answer 2

Power is 2 because of i^2