How do calculators calculate the values of erf(x), given a number x? Is there any formula for approximating it? (erf(x) stands for the error function evaluated at x) - Quora
Deciphering the scope of 'goods'-A labyrinthine task! | Lakshmikumaran & Sridharan Attorneys
Solved For values of complementary error function (erfc), | Chegg.com
How to Solve erf(x) = p for x on a TI-83+ Calculator - YouTube
Error function calculation -erfc? - Fixya
fx-991ESPLUS | Non programmable | scientific calculator | CASIO
New function in Casio fx-570ES calculator.flv - YouTube
Eddie's Math and Calculator Blog: Casio Classpad fx-CP400: Defining Functions
fx991EX Functions, Tables, Regressions and Visualization with QR Code Mini-Math Lesson) - YouTube