Question: matrix multiplication

i am trying model my one of the problems.

i am the beginner to maple software so sometimes it become hard to do simple tasks here i have the problem

i want ot multiply u(x,y) with B where B is a 3*3 matrix but i get the answer zero,

as we all know that it will be point wise multiplication.

kindly help me how to do it.

i will be thankful if somone can give me the email for future correspondence and help.


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