Key Specs & Features
Features & Functions
Functions: 417 built-in mathematical and scientific functions.
Display: Natural Textbook Display (NaturalV.P.A.M.) formulas, fractions, roots etc. display as in textbooks.
Display format: 10digit mantissa + 2digit exponent (10 + 2 digits), full dotmatrix display.
Power: Dual power solar when light is sufficient, battery backup when not.
🔢 Mathematical Capabilities
The fx991ES PLUS 2 supports a wide range of maths/science operations:
Basic arithmetic, fractions, mixed numbers
Trigonometry & hyperbolic functions (sin, cos, tan, sinh, cosh, tanh, and their inverses)
Exponential, logarithmic functions, powers, roots, reciprocals, factorials
Complex calculations: complex numbers, matrices, vectors, basen (binary/hex/octal/decimal) conversions
Calculus: numerical integration, differentiation
Equation solving, system of equations, polynomial roots etc.
Statistics & probability: listbased STAT, standard deviation, regression analysis, permutations/combinations, data sets
Table function, variable storage (9 variables), random integer generator, scientific constants, metric conversions.
