matlab polynomial

In MATLAB, you can work with polynomials using the `poly` function. This function allows you to create and manipulate polynomials by specifying the polynomial coefficients.

To create a polynomial, you can use the `poly` function as follows:

coefficients = [1, -2, 3]; % coefficients of the polynomial
p = poly(coefficients); % create the polynomial

The `polyval` function can be used to evaluate the polynomial at a specific point. For example:

x = 2; % point at which to evaluate the polynomial
y = polyval(p, x); % evaluate the polynomial at x

You can also perform operations on polynomials such as addition, subtraction, multiplication, and division using functions like `polyadd`, `polysub`, `polymul`, and `polydiv`.

Additionally, MATLAB provides functions like `roots` to find the roots of a polynomial, `polyder` to compute the derivative of a polynomial, and `polyint` to integrate a polynomial.

I hope this helps! Let me know if you have any further questions.