Eddie's Math and Calculator Blog

Review:  Texas Instruments TI-73 Explorer Basic Information for the TI-73 Explorer Company: Texas Instruments Production Years:  1...

Inverse Linear Regression Introduction The goal:  fit bi-variate data (x,y) to the curve: y = 1 / (a*x + b) We will be able to use ...

HP Prime and TI Nspire CX CAS:  Solving Integral Equations Introduction The program INTEGRALSOLVE solve the following equation: ...

Integrals with the Error (erf) Function Introduction - Integrals Involving the Erf Function erf(x) = 2 / √π * ∫( e^-(t^2), t, 0, x)   *...

HP 41/DM41L  and TI-60X:  Exponentiation of Large Numbers But Why a Program when we have Button? This is true.  What this program does ...

HP Prime and HP 41C/DM 41L:  Sum of Two Squares  Introduction Given a positive integer n, can we find two non-negative integers x and y...

TI Nspire CX II:  Distributing Money Among Friends The Problem This post is inspired from a Instagram post by @gercekboss at www.eylemm...

TI-84 Plus CE:  Rectangular Waveguide - Cutoff Frequency  Introduction The program WAVEGDE computes the cutoff frequency of a recta...

Solving a System of Conic Equations: An Unorthodox Method  Introduction Problem:  Find the solutions to the following systems of equati...

A Choice of Discounts Situation We are ready to purchase two items.  Let A be the cost of the more expensive item, while B is the c...

TI-84 Plus CE and HP Prime:  Calculating Color Temperature Introduction We can estimate a color temperature for a given color.  However...

Algebra:  Solving for an Immediate Value To Calculate A Desired Result Introduction Considering the following problem: We have to equ...

TI-84 Plus CE:  Solving Algebraic Equation Scripts Introduction There are four programs that uses the wait and string commands to provi...

TI Nspire CX and Casio Micropython:  Recursion Polynomials Introduction This blog entry deals with how to calculate functions defined a...