Specifically, when m is a positive integer, n m represents n times of m in the formula. When m is a decimal, m can be written as a/b (where a and b are integers), n m means n a and b times the root sign.
When m is an imaginary number, we need to use Euler formula eiθ= cosθ+isθ, and then use logarithmic properties to solve it.
The result of taking m of n as a power is called m power of n, also called m power of n.