The power of a number or term is the exponent.
The power of i^7 is 1
The power of i^2 is 2
The power of i^3 is 3
The power of i^4 is 4
The power of i^7 is 7
The power of i^26 is 26
Complex numbers arise when dealing with the square root of a negative number. It is represented with i
square root of -1 is written as i
Thus
1^2 = -1
i^7 = i^2 * i^2 * i^2 * i^1 = - 1 * - 1 * - 1 * i = - i
i^3 = i^2 * i = - 1 * 1 = - i
i^4 = i^2 * i^2 = - 1 * - 1 = 1
i^26 = i^2 * i^2 * i^2 * i^2 * i^2 * i^2 * i^2 * i^2 * i^2 * i^2 * i^2 * i^2 * i^2 = -1*-1*-1*-1*-1*-1*-1*-1*-1*-1*-1*-1*-1 = -1s
