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 functions
Entry System - Algebraic (D.A.L.)
1/x
x²
square root
Percentage (%)
Pi Key
GCD, LCM
Quotient and Remainder Calculation
Fractions
Training (DRILL) Function
Multi-Line Playback
Last Answer Recall (ANS)
Memory Variables - 9
3-Digit Punctuation
1-Variable Statistics
2-Variable Statistics
Regression Calculations - 7
Mean, Standard Deviation
nCr, nPr, n!
Random Numbers
Deg, Rad, Grad Modes
Sin, Cos, Tan, and Inverses
Hyperbolic Functions
Sexagesimal and Decimal Conversions
Rectangular and Polar Coordinates Conversions
Bin, Pen, Oct, Hex, Dec Number Systems
Logical Operation (AND, OR, NOT, NEG, XOR) Number Systems