Numerical Methods calculators
https://atozmath.com/Menu/ConmMenu.aspxNewton's Forward Difference formula 3. Newton's Backward Difference formula 4. Newton's Divided Difference formula 5. Lagrange's formula 6. Stirling's formula 7. Bessel's formula 4.2 Numerical Differentiation first order and second order using 1. 2 point Forward, Backward, Central difference formula 2. 3 point Forward, Backward, Central ...
Online calculator: The Newton Polynomial Interpolation
https://planetcalc.com/9023First, enter the data points, one point per line, in the form x f (x), separated by spaces. If you want to interpolate the function using interpolating polynomial, enter the interpolation points into the following field, as x values, separated by spaces. You can also find some theory about the Newton interpolating polynomial below the calculator.