Sharp EL-531VB Scientific and Math Calculator - Perfect for high school students, this calculator helps you breeze through as you try to solve math and science problems. x, other symbols Percent Fraction Calculation Equation playback Sin, Cos, Tan, and Inverse Hyperbolic and Inverse functions Deg/Rad/Grad Mode DMS to DD operations DRG Conversion 1 and 2 Variable statistics including regression, permutations, factorial 7 Memories