Casio Scientific Calculator, 540+ Functions, Natural Textbook Display, Black, FX-991CW

Casio scientific calculator FX-991CW with 540+ functions and a high-resolution natural textbook display that shows fractions and equations the way you write them. Display: 10 + 2 digits with a multi-line view. It solves linear equations with 2-4 unknowns, polynomial equations up to degree 4 and inequalities. It also does matrices up to 4 × 4, vectors, complex numbers, integration and differentiation, Base-N, statistics with 7 regression types and spreadsheet. It has 47 scientific constants, 40 unit conversions and 9 memory variables. Power: solar + LR44 battery, with auto power off. Comes with a clip-on hard cover. Size: 77 × 162 × 10.7 mm, weight 95 g. Made in Thailand. 1 year warranty.