Complex Numbers; Calculator Activity - Sharp EL-W516B Operation Manual

OBJECTIVE: To calculate the modulus, the complex conjugate, and to simplify complex
expressions.
The absolute value or modulus of a complex numbers is defined as

x iy
Before starting put your calculator in CPLX mode by pressing
1. What is the modulus of
STEP 1: To start the absolute value press
STEP 2: To enter
STEP 3: To enter
STEP 4: To determine the modulus press
2. What is the complex conjugate of
STEP 1: Press
STEP 2: To enter
STEP3: Press
3. Simplify
STEP 1: To enter
STEP 2: To subtract press
STEP 3: To enter
STEP 4: To solve press

Calculator Activity

COMPLEX NUMBERS

 
2 2
x y
.

2
press
i
press
.
1 
i 2
press
to get the complex conjugate.
  
1 2 i 3 6 i

1 2 i 3
press
i 
6
press
i 
2
?
and then press
.
1 
i 2
?
.
.
.
42
.
.
.
.
.
.