Mathematica Asked on November 28, 2021
I have a problem to derive an interpolation function.
I am quite new to mathematica, so I suspect I miss something.
I have a list of values of 1000 values (L) that represents a function that I want to derive.
The list looks like this :
I interpolate the list
InterL = Interpolation[L, InterpolationOrder -> 1]
I verify that the interpolation works :
In[399]:= InterL[400.6]
Out[399]= 686.8
If I plot InterL I have a similar curve as L except that is defined on everypoint.
Now if I try to derive InterL and plot it I get this curve :
Which doesn’t look like the derivative of the precedent. I have tried to evaluate the derivative, etc. I can’t find a solution.
Is it possible to derive this curve ?
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