I have a polynomial function of many symbolic variables, and I want to extract the 'coefficient matrix' from this polynomial. Every term in the polynomial has only two factors of these symbolic variables, i.e.
The coefficient matrix I want to extract is the one that would produce precisely this polynomial if I evaluated the vector-matrix-vector product:
where here x is a vector whose entries are all these symbolic variables, and Kis the coeffient matrix. In Mathematica, this is straightforward, there's a function called CoefficientArrays which performs exactly this operation. What is the best way to do this in Matlab? I have looked at the 'coeffs' function, but it doesn't appear to offer the same level of functionality as the Mathematica function I referenced. 
