Mark the Correct alternative in the following:
The value of (i5 + i6 + i7 + i8 + i9)/(1 + i) is
We know that
i4n+1 = i
i4n+2 = i2 = -1
i4n+3 = i3 = -i
i4n+4 = i4 = 1
i5 + i6 + i7 + i8 + i9 = i + (-1) + (-i) + 1 + i
= i