Hy, I'm an italian Computer Engineering student from Italy and I just started using MATLAB for the work of my bachelor thesis. I'm trying to write some polynomials with literal variables different from x, like these:

A= x^3-b*x^2+a;

B= x^2+a*x-b

I would like then to apply the operations of sum, difference and product between these polynomials. I tried using:

`>> syms a;>>S=[1 -1 2];>> G=[1 a 2];>> P= conv(S, G)`

but what I obtain is this error message:

`Undefined function 'conv2' for input arguments of type 'sym'.Error in conv (line 39)c = conv2(a(:),b(:),shape);`

HELLLLP!!!! PLEASEEE!!!! THX ðŸ˜‰

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