You can
put this solution on YOUR website!well...you can multiply i by itself 41 times, or...
looking at powers of i __ i^0=1, i^1=i, i^2=-1, i^3=-i, i^4=1, i^5=i...
the pattern shows a 4-step cycle __ so divide the exponent by 4 and use the remainder
i^41=i^(41-40)=i^1=i
