Compile this mex file for central difference approximation of the derivative of a function.
>> mex dqdt.c
dydx = dqdt(y,x)
x corresponds to columns of y. y can have any number of columns.
Geoff Wawrzyniak (2022). Derivative: Central Difference Approximation (https://www.mathworks.com/matlabcentral/fileexchange/11965-derivative-central-difference-approximation), MATLAB Central File Exchange. Retrieved .
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