Eddie's Math and Calculator Blog

HP Prime User Keyboard Primer On of the features of the new HP Prime is the ability to assign custom programs, mathematical commands, or co...

The Morning Panel The morning started off with a Q&A panel. The speakers were Ruth Patterson, Jason Smith, Cyrille de Brebisson, and...

First of all, thanks to Hewlett Packard and everyone at the HHC 2013 committee ( http://hhuc.us/2013/committee.htm ) - you are all amazing...

Greetings from Fort Collins, CO! I am here at Fort Collins, CO attending the annual HHC (HP Handheld Conference 2013). Basically, thi...

The company Calculated Industries ( http://www.calculated.com/ ) manufactures specialized calculators. Here is my small collection: Machi...

Introduction The general n-order differential equation can be translated into a system of first-order differential equations: For a seco...

Update:  One of the numerical example (example 1) has incorrect numerical results.  This blog has been edited.  The results posted are no...

Critical Points and Determining What Happens In this blog entry we are working with a system of two equations: x' = f(x,y) y' = g...

Hi everyone! In this blog post, all numbers with a "b" after them are designated binary numbers. (the extra zeroes in front ar...

During our study of the Beal Conjecture with my friend and fellow mathematics graduate Jonathan Beal, we looked at the equation A^x + B^y =...

Solving x'(t) = f(y(t)) y'(t) = g(x(t)) Sometimes using algebra can be more efficient than using Laplace transforms in solving sy...

Solving y" + A*y' + B*y = f(x) In part 4 (link: http://edspi31415.blogspot.com/2013/08/differential-equations-4-homogeneous.html...

Greetings from Friends Cafè. In Monrovia, CA! My favorite place to hang out on Friday nights. I doubt we see these in office stores anymo...

Greetings from San Diego, am on vacation until Labor Day. Specially I am at a Starbucks stop on my way to Encinitas Beach, enjoying a Chai...