
Andrew K. answered 07/17/19
Student-Athlete and Physics/Computer Science Double Major at MIT
Using rules of exponents (a^(b*c) = (a^b)^c = (a^c)^b) we can rewrite this as i^(1400) = i^(350*4) = (i^4)^350. i^2 = -1 so i^4 = 1. Therefore, the original problem simplifies (i^4)^350 = (1)^350 = 1. So the final answer is 1. Using this same logic, we can see that i raised to a power which is a multiple of 4 will always equal 1.
Hope this helps! Let me know if I need to explain anything.