Radial basis functions interpolation in 1D ( derivatives)

How one can obtain the first and second derivatives (with a velocities and accelerations at the beginning and at the end supposed null conditions "V_init = V_final = 0 and A_int = A_final = 0") of the function f (x) modeled by RBF interpolation in 1D. This function is presented in the following link: https://www.mathworks.com/matlabcentral/fileexchange/10056-scattered-data-interpolation-and-approximation-using-radial-base-functions

help me, thank you