Is the a matlab function that approximates the derivative of a function?
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I am trying to find the equivalent function to 'derivative' function in Scilab, is there something similar in Matlab? I searched quite a lot,but no lack so far, any advice would be much appreciated!
Thank you!
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David Sanchez
2013 年 8 月 9 日
From Matlab documentation:
Y = diff(X)
calculates differences between adjacent elements of X.
Examples:
The quantity diff(y)./diff(x) is an approximate derivative.
x = [1 2 3 4 5];
y = diff(x)
y =
1 1 1 1
z = diff(x,2)
z =
0 0 0
Given,
A = rand(1,3,2,4);
diff(A) is the first-order difference along dimension 2.
diff(A,3,4) is the third-order difference along dimension 4.
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dpb
2013 年 8 月 9 日
I'm assuming OP may be looking for symbolic derivative for his function rather than numeric approximation, maybe????
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