Polynomial as product of two vectors

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I am trying to display a polynomial as the product of two vectors.
a = [1 2 3 4 ];
syms x
f = [x,x^3,x,x^3]';
a.*f
The output should be x + 2x^3 + 3x +4x^3 but instead a number of vectors are output and f(x) is output as conj(f(x)). Writing instead a*f results in the correct output but f(x) is still displayed as conj(f(x)). Can someone explain how this issue can be fixed?

Accepted Answer

Bruno Luong
Bruno Luong on 11 Nov 2020
Try this
a = [1 2 3 4 ];
syms x
f = [x,x^3,x,x^3].';
a*f

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