Consider the equation x^???? = 1 where ???? is a positive whole number.
a. For which value of ???? does x^???? = 1 have only one solution?
b. For which value of ???? does x^???? = 1 have only ±1 as solutions?
c. For which value of ???? does x^???? = 1 have only ±1 and ±ii as solutions?
d. For which values of ???? does x^???? = 1 have ±1 as solutions?