Lagrangian Interpolation

[Thomas Klemm]

(03-14-2019 08:12 PM)PedroLeiva Wrote:  Example from HP 25 Application Programs, Chapter 5 Numerical Methods/Linear Interpolation: p86
Given
f(7.3)= 1.9879
f(7.4)= 2.0015
find by linear interpolation f(7.37)

For those who want to give it a try:

Code:

01: 23 04    : STO 4
02: 24 00    : RCL 0
03: 41       : -
04: 24 03    : RCL 3
05: 61       : *
06: 24 02    : RCL 2
07: 24 04    : RCL 4
08: 41       : -
09: 24 01    : RCL 1
10: 61       : *
11: 51       : +
12: 24 02    : RCL 2
13: 24 00    : RCL 0
14: 41       : -
15: 71       : /
16: 13 00    : GTO 00

References

• HP-25C emulator
• HP-25 Applications Programs
• (25) 55 Applications Programs for Teenix MultiCalculator Emulator and Hardware