CASIO Scientific Calculator Plastic Black 3+

The CASIO fx-991ES PLUS (2nd Edition) is a non-programmable scientific calculator designed for students and professionals who need advanced mathematical functions. Featuring a natural textbook display that shows mathematical expressions exactly as they appear in textbooks, this calculator makes complex calculations intuitive and easy to verify.

With 417 functions and a comprehensive range of scientific tools, this calculator is ideal for high school and university-level mathematics, science, and engineering coursework.

• Natural Textbook Display (Natural-VPAM) - expressions display in standard mathematical notation for easier understanding
• 417 Built-in Functions including equation solver, differentiation, integration, and multi-replay functionality
• Matrix and Vector Calculations - perform complex linear algebra operations
• Complex Number Calculations - handle imaginary and complex number operations seamlessly
• Suitable for ages 13+ and appropriate for high school through university-level mathematics courses
• Compact black plastic design with standard scientific calculator layout for portability and everyday use