# Unit 4: Complex Numbers and Complex Impedance

**Objective:** Demonstrate understanding of complex numbers expressed in both rectangular format and polar format, convert from rectangular format to polar format, and convert from polar format to rectangular format. Add, subtract, multiply, divide, exponentiate, disassociate, negate, and form the complex conjugate of complex numbers. Use complex numbers on a scientific calculator. Calculate complex impedance of resistive, capacitive, and inductive elements. Calculate total impedance of series and parallel arrangements of complex impedances.