Precalculus · Problem 3

Rational Functions — Stitz & Zeager

Mathematics — Precalculus · complex-number-arithmetic

Problem

For

z = i

w = -1 + 2i

, find and simplify the following. Write your answers in the form

a + bi

z + w, \quad zw, \quad z^2, \quad \frac{1}{z}, \quad \frac{z}{w}, \quad \frac{w}{z}, \quad \bar{z}, \quad z\bar{z}, \quad (\bar{z})^2