Casio Scientific Calculator Natural Display 552 Functions 77x11x165mm Graphite Ref FX-991EX
The perfect choice for both high school and college students with 417 built-in functions. Natural textbook display shows formula and results exactly as they appear in the textbook. Improved math functionality with standard deviation, multi-replay function, logarithm log and list-based STAT data editor. Ideal for coursework in general math, pre-algebra, algebra I & II, geometry, trigonometry, statistics, calculus, biology, chemistry, physics and engineering.