Casio fx-991EX Standard Scientific Calculators Black

Highlights

• The use of icons on the menu screen improves viewability. Selection of the desired function is quick and easy.
• Input and display fractions, powers, logarithms, roots, and other mathematical formulas and symbols just as they appear in textbooks.
• Variables and statistical calculation results stored in memory can be displayed in lists. There’s no need to recall and confirm individual values as with previous models.
• Nearly all English words are displayed on the screen in unabbreviated form. Interactive menu display realizes more intuitive operation.
• ClassWiz contains calculation functions that support even advanced mathematical operations, including spreadsheet calculations, 4 × 4 matrix calculations, calculation of simultaneous equations with four unknowns and quartic equations, and advanced statistical distribution calculations.