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CTIFREE 991es Matrix Complex Function Equations Scientific Calculator
The CTIFREE UL-991ES PLUS Max is a 417-function scientific calculator designed for engineering and academic use, featuring an "ultra-large" 10+2 digit 2-line display. It supports natural textbook display for fractions and radicals, solar/battery dual power, and includes advanced functions like matrices, vectors, and complex numbers.Key Features of the CTIFREE UL-991ES PLUS
Max:Functions: 417 mathematical functions including calculus, statistics, matrices, vectors, and equation solving.Display: 10+2 digit, 2-line "ultra-large" display allowing for natural textbook-style input.Power: Dual-way power (solar and battery).Design: Ergonomic keys with a sliding hard cover for protection.Applications: Suited for students and professionals in engineering, high school, and college
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