CONCEPTUAL TOOLS

By:  Carl H. Durney and Neil E. Cotter

Complex Analysis

 

 

Basic math

 

 

Re[]

 

 

Example 1
 
 
 

 

Ex:            Find , (i.e., find the real part)
Ans:          7cos(25°) ≈ 6.34
Sol'n:        The answer follows directly from Euler's formula (see tools for rectangular and polar forms for complex numbers):