Eddie's Math and Calculator Blog
It's all about mathematics and calculators
Sunday, September 13, 2026
HP 71B Basic and Casio fx-CG 100: Weighted Random Sample
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HP 71B Basic and Casio fx-CG 100: Weighted Random Sample Introduction In calculators, it is fairly easy to generate a rand...
Saturday, September 12, 2026
Trigonometry Reduction Formula and Solving Simple Arcsine and Arccosine Equations
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Trigonometry Reduction Formula and Solving Simple Arcsine and Arccosine Equations Some Background and Periodic Reduction Formulas ...
Saturday, September 5, 2026
Python – Earth’s Radius and Gravity in US Units
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Python – Earth’s Radius and Gravity in US Units Introduction The following script, gravus2.py, estimates the Earth’s gravity i...
Saturday, August 29, 2026
The MU Key on a Four Function Calculator and Programs for the DM42/HP 42S
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The MU Key on a Four Function Calculator and Programs for the DM42/HP 42S Not too long ago, I purchased this very colorful, four funct...
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