Eddie's Math and Calculator Blog

Casio fx-CG50: Using Goto and Label to Simulate Subroutines If you have a subroutine, you can program the main algorithm and any subrouti...

TI-84 Plus and HP 12C Platinum:  Banker's Rounding Method Introduction  The banker's  rounding method involves rounding numeric...

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TI-84 Plus and HP Prime:  Chinese Remainder Theorem Introduction The Chinese Remainder Theorem deals with solving the following congrue...

TI 84 Plus:  Expressing an Integer as a Sum of Powers of Two Happy Thanksgiving! The program POW2SUM expresses a positive integer as a ...

TI-84+ and Casio (fx-CG 50) Micropython: Simplifying Nested Radicals Introduction  The following program will simplifying the following...

TI-84+ and Casio (fx-CG 50) Micropython:  Simplifying  A sin x + B cos x To r sin (x + θ) Introduction Simplify the expression: (I)  ...

TI-84+ and Casio Micropython (fx-CG50):  Inverse Factorial of Integer Introduction The goal is to solve the equation for n: x = n! ...

HP Prime:  The Period of a Pseudo Random Number Generator Introduction Most scientific calculators, mathematical programs, and spreadsh...

Simplifying Nested Radicals Introduction A nested radical is a radical of the form: √(x_0 + √(x_1 + √(x_2 + .... + √(x_k) ... ))) A...

HP Prime Firmware Update The newest firmware update (version 14181) is now released.  Changes include: * New function UVAL and ...

Hi everyone, I am Edward Shore, author of Eddie's Math and Calculator Blog, and I am joining Derek Theler on the JDRF walk at the Rose ...

Countdown: The Numbers Game Introduction The Numbers Game is part of a worldwide famous game show called Countdown.  Countdown is a gam...

HP 12C Substantial Presence Test: When the Payee Becomes a Resident Alien Introduction When a U.S. company or entity pays a foreign en...