Casio FX-991CW scientific calculator high resolution display with 4 gradations and more than 540 functions

Key Features:

- High-resolution & 4-gradation LCD display — shows expressions (fractions, roots, powers) just as they appear in textbooks for clearer understanding.

- 540+ built-in functions — covers algebra, calculus (including numerical integration & differentiation), trigonometry, statistics, probability, vectors, and matrices.

- Natural Textbook Display — makes equations and results intuitive and easy to read.

- Spreadsheet & Math apps — includes spreadsheet, table, equation solver and probability tools.

- QR code support — generate QR codes to visualize data like graphs on a smartphone/tablet via ClassPad.net.

- Dual power — solar panel with battery backup for reliable use.

- Variable memory — store and recall up to 9 variables.

- Exam-friendly & portable — widely accepted in exams and comes with a protective hard cover.