1. Using the TI 83 Plus Calculator
Complex Numbers
Using the TI 83 Plus Calculator

2. Setting the Calculator
Press MODE key
Use the down ARROW key and select a+bi
Press ENTER.

3. Adding Complex Numbers
Add the two complex numbers:
(2+3i ),(-1+4i)
Locate the i key
(Press 2ND then .)
Type:
(2 + 3i) + (-1 + 4i)
Press ENTER.
The sum is (1 + 7i)
DONE

4. Subtracting Complex Numbers
Subtract the two complex numbers:
(2+3i ),(-1+4i)
Locate the i key
(Press 2ND then .)
Type:
(2 + 3i) - (-1 + 4i)
Press ENTER.
The difference is (3 - i)
DONE

5. Multiplication of Complex Numbers
Multiply the two complex numbers:
(2+3i ),(-1+4i)
Locate the i key
(Press 2ND then .)
Type:
(2 + 3i) (-1 + 4i)
Press ENTER.
The product is
( i)
DONE

6. Division of Complex Numbers
Divide the two complex numbers:
(2+3i ) by (-1+4i)
Locate the i key
(Press 2ND then .)
Type:
(2 + 3i) / (-1 + 4i)
Press ENTER. Your answer will be in decimal form. Use the MATH key to convert it to fraction form.
The quotient is
(10/17 – 11/17i )
DONE