Scientific calculator ideal for secondary school of the 2nd Degree with practical and intuitive design, high-resolution display with 4 gray-grade app and faster processor. More than 540 functions including spreadsheet, QR code generation, simultaneous and up to four degrees polynomal-free, numerical integration, differentiation, statistics, matrices, vector calculation. NATURAL DISPLAY OF THE TEXTBOOK Give fractions, achievements, logarithms, roots and other math formulas and symbols exactly as they appear in the textbooks. Approved for tyre testing and comes with a 3 year warranty.