Master complex mathematical problems effortlessly with the Casio FX-991ES Plus 2nd Edition Scientific Calculator in sleek Black, now available on BOOKISH. Equipped with 417 built-in functions and Casio’s signature Natural Textbook Display, this scientific calculator lets you view fractions, roots, calculus equations, and formulas on-screen exactly as they appear in your textbooks.
Key Features & Benefits:
★ Natural Textbook Display: Displays mathematical expressions such as fractions, powers, logarithms, roots, and integrals in natural textbook format for easy reading and error-free inputs.
★ 417 Advanced Functions: Handles general mathematics, algebra, trigonometry, statistics, calculus, complex numbers, vector calculations, matrix operations, and base-n conversions.
★ Dual Power Source (Two-Way Power): Powered by Solar Energy with Battery Back-up (LR44), ensuring continuous operation during exams or late-night study sessions without unexpected shutdowns.
★ Sleek & Ergonomic Design: Features a rounded, smooth body that fits comfortably in the hand, high-contrast plastic keys with rounded edges, and clear labeling for fast, intuitive typing.
★ High-Resolution Screen: The high-definition 10+2-digit dot-matrix screen provides clear visibility and reduces eye strain during prolonged use.
★ Multi-Replay & Memory Features: Allow you to review, edit, and re-execute previously entered formulas to prevent recalculation. Includes 9 variable memories for complex multi-step computations.
★ Durable Protective Hard Case: Includes a sturdy slide-on hard cover to protect the screen and keypad from scratches and drops when packed in a school bag.
★ Enjoy complete peace of mind with a 3-year service warranty included with your Casio calculator, ensuring reliable performance and expert support for your long-term academic or professional needs.
☆ Advanced Math: Matrix (up to 3×3) and Vector calculations, Complex Number operations, Base-$n$ logic calculations.
☆ Statistics & Data: List-based STAT data editor, Standard Deviation, Regression Analysis, Permutations (nPr), and Combinations (nCr).
☆ Scientific Constants & Conversions: Pre-programmed scientific constants and metric conversion calculations for quick reference in physics and chemistry.
