Appendix B. Review of complex numbers
A complex number, Z, is comprised of a real part and an imaginary part, and Z can be written
Z=x+jy
We often visualize a complex number as a vector plotted in the “complex plane” characterized by real and imaginary axes.
Z= 2+j4
As a vector, we can represent it in both rectangular coordinates as in polar coordinates
Complex number aritmetic
addition
subtraction
multiplication
division