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    %% Second Derivative of Vector
% Calculate the acceleration of an object from a vector of position data.
%%
% Create a vector of position data.

% Copyright 2015 The MathWorks, Inc.

p = [1 3 6 10 16 18 29];
%%
% To find the acceleration of the object, use |del2| to calculate the
% second numerical derivative of |p|. Use the default
% spacing |h = 1| between data points.
L = 4*del2(p)
%%
% Each value of |L| is an approximation of the instantaneous acceleration
% at that point.