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Re: Matrix Differentiation
*To*: mathgroup at smc.vnet.net
*Subject*: [mg85907] Re: Matrix Differentiation
*From*: sikokaj at iit.edu
*Date*: Wed, 27 Feb 2008 04:29:18 -0500 (EST)
*References*: <fq0uav$kab$1@smc.vnet.net>
This seems to work for me. I defined a simple test matrix:
M = Table[x^i y^j z^(i + j) v^(i - j), {i, 1, 4}, {j, 1, 4}]
and then did
D[#, x, y, z, v] & /@ M
Kajetan Sikorski
mark wrote:
> Hi all,
>
> I need to differentiate a 4x4 matrix M with respect to four variables
> x1,x2,x3 and x4.
>
> I have tried to use the function D as follows:
>
> D[M,{{x1,x2,x3,x4}}]
>
> what I get is a 4x4 matrix and each term in this matrix is a vector.
>
> Am I right when I used this function or there is another function to
> do so?
>
> Thanks
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