How do I create a matrix of symbolic function elements and also able to access the element in the matrix using row and column index?
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Shawn Miller
on 27 Feb 2016
Commented: Walter Roberson
on 28 Feb 2016
I'd like to conduct matrix operation to symbolic functions. For instance, a row vector of symbolic functions times a column symbolic functions is the sum of product of symbolic functions. Also, I'd like yo access any element in this matrix and gets the corresponding symbolic element, how can I do this?
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Walter Roberson
on 27 Feb 2016
You will probably need to feval(symengine) to do this, so that you can slip into a programming language (MuPAD) which has a syntax that distinguishes between indexing and function evaluation.
Or you could compromise a little and invoke the functions to get symbolic expressions that can be multiplied, then symfun() the expressions back into symbolic functions. The results would differ if the functions have side effects, and you would lose the ability to use feval(symengine, 'op', ...) to probe the structure of the component expression.
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Walter Roberson
on 28 Feb 2016
Yup. Algebraic matrix multiplication "*" works fine on arrays of symbolic expressions, and you can index the array without difficulty.
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