I'm trying to find some tabulated data in some big-and-smart-book with regards to second order central difference of a function of just one variable: f''(x).
I did find formula for 7th order [1], but I need higher orders, like 12 or 15.
thanks a lot!
[1] http://www.holoborodko.com/pavel/numerical-methods/numerical-derivative/central-differences/