Casio fx-991EX Classwiz for High School Students: Getling, David: 9781548247102: Amazon.com: Books
Casio fx-991EX classWiz user manual and commands.
Which is better, the Casio FX991 EX or FX 991 CW? What is the difference between these two calculators? Which one should I get? Is FX 991 CW the best non-programmable calculator? -