Casio FX-991SP CW Scientific Calculator, Recommended for Spanish and Portuguese Curriculum, 5 Languages, Over 560 Functions, Solar, White : Amazon.com.be: Office Products
What is better the FX991EX or the FX991CW? I've been recently intrested in a ClassWiz Casio calculator but the FX991EX is 'Unavailable' so I considered the FX991CW but I am a little