(71B) Euler-Taylor method for the HP-71B

[Albert Chan]

(12-13-2019 04:10 PM)Namir Wrote:  Do I have your permission to update/adapt my HP-71B listing using your approximation for the second derivative?

Sure. Glad it helps.

FYI, you can delete line for y 2nd order correction, and see how much y'' helps.
With the same example, and *only* first derivative: |%error| goes up from 4.266e-4 to to 0.6612

2nd order correction improved accuracy 1550X