ARITHMETIC Complex Numbers (Page 2 of 3)

Other operations are done in similar fashion. For example, evaluate (2+3i)(1-5i) and (2+3i)/(1-5i). With division, the result will often include fractions, so we can use the Frac command if necessary.

 CLEAR key. 2nd ENTRY key. Left arrow key. (seven times) Multiply key. ENTER key.

 2nd ENTRY key. Left arrow key. (seven times) Divide key. ENTER key.
 MATH key. 1: menu selection. ENTER key.

 Calculator screen image.

For an example involving exponents, let's find the square of  2+3i.

 CLEAR key. Left parenthesis key. 2 Plus key. 3 2nd i key. Right parenthesis key. x-squared key. ENTER key. Calculator screen image.
Copyright © 2010 Turner Educational Publishing
Go back to the previous page. Go to the next page. Go to the Table of Contents. Go to the Index page. Go to the Quiz page. Exit to the Home page.