N-Point Lagrangian Interpolation Tool PHP Program by Jay Tanner

Enter XY data pairs, with the X and Y values separated by spaces, commas or semicolons. The XY data columns can also be given optional labels. Replace initial default start up example table with your own data table. NOTE: There must be at least two pairs of matching numerical data points.

= X Data Label                    Y Data Label =

18 5.7984178 19 5.8677782 20 5.9371455 21 6.0065121 22 6.0758699 23 6.1452107 24 6.2145262

Enter any general value of (x) x  =

For the given (x) value, the interpolated (y) value is     y  =  6.0065121

This program is a numerical solution to the N-point Lagrange interpolation equation, shown here, and uses the given input data above.

Jay Tanner - 2024 - v4.1