Monday, October 3, 2022

Matrices in Python without Numpy: Part 1

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Matrices in Python without Numpy:  Part 1 Introduction Python is a wonderful programming language and is a welcome addition to graphing calc...
Sunday, October 2, 2022

Swiss Micros DM41X: Setting Up Keys Through a Program

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Swiss Micros DM41X:  Setting Up Keys Through a Program Assigning User Keys Through a Program On the HP 41/DM 41 family, it is possible to st...
Saturday, October 1, 2022

Casio fx-CG 50: Random Walk Histogram

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Casio fx-CG 50:  Random Walk Histogram Mosquitos an Inspiration, What?  Inspiration:   Ellenberg, Jordan.    Shape:  The Hidden Geometry of ...
Sunday, September 25, 2022

Proving Chebyshev Polynomial Closed Formulas for n = 0, n = 1, and n = 2

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Proving Chebyshev Polynomial Closed Formulas for n = 0, n = 1, and n = 2 Chebyshev Polynomials of the First Kind Recurrence Definition: T_0(...
Saturday, September 24, 2022

LSQ2: An update to LSQ (Casio fx-9750GIII, TI-84 Plus CE)

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LSQ2:  An update to LSQ (Casio fx-9750GIII, TI-84 Plus CE) Least Square Matrix and Correlation The program LSQ2 fits the allows to fit data ...
Monday, September 19, 2022

HHC 2022 Conference Videos

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HHC 2022 Conference Videos Coming to you from Nashville, Tennessee! "We're Not Dead Yet" And if it is any indication, HHC is d...
Sunday, September 18, 2022

Quick Tip: Determining the Characteristics of a Quadratic Equation

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Quick Tip:   Determining the Characteristics of a Quadratic Equation Introduction For our algebra and college pre-calculus students, here is...