Casio FX-991 ES PLUS 2nd Edition Function Scientific Calculator - Black

The Natural Display (Natural-V.P.A.M.) shows mathematical expressions like roots and fractions as they appear in your textbook, and this increases comprehension because results are easier to understand.
Natural-V.P.A.M.
Dot matrix display
15 and 10+2 digits
417 functions
Equation solver
20 pairs of values for metric conversion
Calculation with complex numbers
Calc key (temporary formula memory)
40 physical constants
Matrix/vector calculation
Numerical integral & differential calculus
Random Integers
New equation Mode
Function table
Two-Way-Power  Plastic keys