【實用工具app】ENTEЯ|最夯免費app-綠色工廠好玩App

ENTEЯ is a simple RPN (reverse Polish notation) calculator.It sports a two line display, a stack with x,y,z and t. 27 variables to store and recall values and a statistic register for the sums of x, y, x2, y2, xy and n.It supports basic operations, conversions, trigonometric operations and statistic operations like standard deviation, probability, linear regression and mean values.