คำศัพท์คณิตศาสตร์
A most logical way to continuing our study of complex numbers would be to look at the sin and cos of a complex number, the exponential function of a complex number, powers and roots of complex numbers... Basically, separate any elementary function3 of a complex number into real and imaginary parts. The sin, cos, and exponential functions are easy, and left to the reader as an exercise. Here we consider powers and roots of complex numbers.