*** CLEARANCE ITEM - LIMITED STOCK AVAILABILITY AT THIS PRICE ***The EL-W531TL performs over 420 advanced scientific functions and utilizes WriteView Technology, 4-line display and Multi-Line Playback to make scientific equations easier for students to solve. It is ideal for students studying general math, algebra, geometry, trigonometry, statistics, biology, chemistry, and general science. Hard cover protects from scratches.Other functions include:420 built-in functionsEntry System - Algebraic (D.A.L.)1/xx²square rootPercentage (%)Pi KeyGCD, LCMQuotient and Remainder CalculationFractionsTraining (DRILL) FunctionMulti-Line PlaybackLast Answer Recall (ANS)Memory Variables - 93-Digit Punctuation1-Variable Statistics2-Variable StatisticsRegression Calculations - 7Mean, Standard DeviationnCr, nPr, n!Random NumbersDeg, Rad, Grad ModesSin, Cos, Tan, and InversesHyperbolic FunctionsSexagesimal and Decimal ConversionsRectangular and Polar Coordinates ConversionsBin, Pen, Oct, Hex, Dec Number SystemsLogical Operation (AND, OR, NOT, NEG, XOR) Number Systems