make a polynomial from an unknown variable in matlab

To create a polynomial in Matlab with an unknown variable, say x, you can use the following steps:

1. Define the symbolic variable x using the syms function.
2. Create the polynomial expression using the defined variable x.

Here's an example code snippet to create a simple polynomial 3x^2 + 2x + 5:

main.m
syms x
polynomial = 3*x^2 + 2*x + 5;
disp(polynomial);
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You can modify the coefficients and the degree of the polynomial to suit your needs.