Eddie's Math and Calculator Blog

Retro Review:  TI-30 (1976)  One more quick blog posts before I head off into surgery this week. Quick Facts Model:  TI-30...

Casio fx-3650P: Circular Segment Introduction Variables: X:  radius Y:  angle (in degree) C:  chord length D:  altitude A:...

HP Prime and TI 84 Plus CE:  Jacobi Elliptic Functions Introduction Jacobian Elliptic Functions are a set of twelve functions denoted b...

HP 11C:  Construction:  Calculating the Number of Tiles Introduction The 11C program presented will calculate the number of tiles n...

HP 42S and HP Prime: Rabbits vs Foxes Introduction The program presented today is based on the Rabbits vs. Foxes program for the HP 25 ...

Fun With the TI-59 The following programs can be used on the TI-58C, TI-58, TI-59, TI-66, and any applicable emulator such as the RCL...

Review: Calculated Industries Tradesman Calc Quick Facts: Model:  Tradesman Calc, Model Number 4400 Company:  Calculated Indust...

TI-59: Geometric Areas Introduction The program calculates areas of planar geometric shapes.  The following user keys are defined: ...

HP 42S & Casio fx-260 Solar: Continued Fractions Introduction Let x be a real number.  Then x can be represented by the fraction: ...

TI 84 Plus CE: Testing Limits of the Arcsine Function Approximating the Arcsine The approximation of the arcsine function is a difficul...

HP Prime:  Firmware Update Here's the latest firmware update for the HP Prime.  This version fixes bugs, makes the commands ROUND and...

TI 84 Plus CE:  Nested Square Root Sums Introduction The program NESTSQM calculates the sequence: √(a + b) √(a + b * √(a + b)) √(a ...

HP 42S/DM42S/Free42: Atmospheric Refraction Introduction The program ATREF calculates the atmospheric refraction and the true "air...

HP 42S/DM42/Free42:  Predicting Freezing Levels and Turn Performance Predicting Freezing Levels The program FREEZE calculates the freez...