The Sharp EL531XTB is a fully-functional, high quality scientific calculator that performs over 270 advanced scientific and mathematical functions. It features a Direct Algebraic Logic function that allows you to enter the elements of an expression in the exact order they appear in the textbook. It also utilizes a large, easy to read 2-line display and Multi-Line Playback to make difficult scientific equations easier to solve. It is ideal for students studying general math, algebra, geometry, and trigonometry. It can also be used for statistics, biology, chemistry and general science. Faculty-approved.