Question

i^38 and i^72

Answer 1

divide 38 by 4, take the ingeger remainder. you will get 2 since 4 divides 36 evenly

Answer 2

*integer remainder

Answer 3

then the answer will be
\[i^{38}=i^2=-1\]

Answer 4

forboth?

Answer 5

no you have to repeat the process for 72

Answer 6

i think 4 goes in to 72 evenly, so answer is
\[i^0=1\]