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Differentiation

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J
J 2012-2-28
关闭： MATLAB Answer Bot 2021-8-20
Hi.
I have an equation that I'd like to differentiate without using the command diff(equation). I've been told that finite-differencing should be used to get the function derivative.
http://en.wikipedia.org/wiki/Finite_difference http://en.wikipedia.org/wiki/Finite_difference_method
Can someone demonstrate how a simple example would work using matlab? That way I can try to build on it. My code currently uses the command diff but I've been told I can't use it.
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J
J 2012-2-28
Its to do with the newton raphson method and my teacher said that it wouldn't work unless finite differencing was used.
Jan
Jan 2012-2-28
But DIFF uses a finite difference.
I assume a meaningful answer is more likely, if you post the actual problem. What kind of equation do you have and which result do you want to get?

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