Thursday, August 30, 2012

Obtaining More Digits with the HP 50g

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Intro: I was reading the Fun With Num3ers blog by Ben Vitalis. The August 18, 2012 entry talked about certain fractions produced various pa...
Tuesday, August 28, 2012

Repeated Operations - Revisited

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Repeated Operations with the TI nSpire What happens when you repeat an operation or a function on a number? I am sure we have all entered ...

Santa Barabra

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I am on vacation this week and loving it. I visited UCSB and found the math department. Below is a picture to remember my visit by. Look ...
Friday, August 17, 2012

Chaos and a War Against Set Theory?

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This is Eddie, at the Friends Cafe at Monrovia, CA, enjoying lunch and a great Friday. Chaos Below are three pages from a beautiful book, ...
Monday, August 13, 2012

Applications and Programming: Rotation of a Graph

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Rotation of a Function - TI-84+ The following program rotates the function y1(x) at an angle θ. The angle θ is measured counterclockwise, ...
Saturday, August 4, 2012

The Blue HP 50g Part 2 (Pictures)

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First of all, this is where I bought the blue HP 50g: The Calculator Store (Barcelona, Spain) Now some pictures. I posted a picture of th...

Applications and Programming: Ellipses

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The following program works with several properties with ellipses. The general equation for an ellipse with center (x0, y0) is: (x - x0)^2...
Thursday, August 2, 2012

The Blue HP 50g Has Arrived

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Thanks to the Calculator Store in Spain! :) This is a HP 50g, only in a blue case. Eddie
Monday, July 30, 2012

Applications and Programming: Area of a Polygon Given the Coordinates of Vertices

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Today's blog entry is how to find the area of an enclosed polygon, when you just know the vertices (corner points) of the polygon. The...
Friday, July 27, 2012

Deal or No Deal (TI-84+)

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Deal or No Deal? This blog entry is about the famous game show Deal or No Deal? . The object is to win as much money as possible by either ...

Finding the Balance Point in a Mortgage

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Greetings! Today's blog entry is about mortgages. When someone takes out a mortgage, or any loan that is to paid over time, the lender...
Monday, July 23, 2012

Numerical Approximations and Debunking the Claim that π has an exact value

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Greetings, I apologize for not blogging sooner (getting over a nasty sore throat/cold). I am still working on the application series, plan...
Saturday, July 14, 2012

Programs for HP 48S and What's Coming Up

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HP 48: Law of Sines and Cosines, Quadratic Formula, and Cubic Formula. Hi everyone! Recently, a poster on the MoHPC HP Calculator Forum as...
Friday, July 6, 2012

New Book: TI nSpire 3.2 (Tech Powered Math)

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For TI-nSpire: there is a new how to book written by Lucas Allen. This boom covers the latest operating system 3.2. For today and tommorro...