Eddie's Math and Calculator Blog

HP Prime: Custom Menu Using a User Key Steps: 1.  Create a new program.  Press [ Shift ], [ Esc ] (Clear) to clear the default text. 2.  Pre...

 Eugene Dietzgen: Compound Trig-Easy Calculator I purchased this cool, vintage formula card on Esty from the Lost Angeles Vintage Co. in Wof...

Older Financial Calculators:  Using the TVM Solver for LN(x) and EXP(x)  Background and the Mathematics Older and even some modern financial...

Binomial Expansion in Two Methods Expanding the Binomial by Two Methods There are two ways to obtain the coefficients of expanding the binom...

 Numworks Update 17.2 - Highlights Update is available at: https://www.numworks.com/ The Numworks website will detect your calculator and wi...

 HP 17BII+ and Numworks: Payment of a Loan with an Unusual First Period The First Payment Is Not Due in a Month In finance, the first paymen...

 HP 17BII+:   Prorated Mortgage Interest and Prorated Property Tax Both formulas presented today are from Michael C. Thomsett's book, Th...

Casio fx-5800P: Lambert Function by Pierre Gillet The programs on this blog entry are created and authored by Pierre Gillet. Gratitude for h...

Review:  Calculated Industries 4090 Sheet Metal/HVAC Pro Review  Quick Facts Model: 4090 Sheet Metal/HVAC Pro  Company: Calculated Industrie...

 Lines with Opposite-Signed Slopes Take two lines, each with opposite signed slopes.  One slope has a positive slope, the other has a negati...

Casio fx-3650P and fx-CG50:   Partial Fraction Decomposition Casio fx-3650P (II) Program: Partial Fraction Decomposition The following progr...

Retro Review:  Sharp EL-9300C  Quick Facts Model: EL-9300C Company: Sharp Years: 1995 - 2000s   Type:  Graphing with Programming Memory:  23...