symbolic polynomial fraction to row vector

To convert a symbolic polynomial fraction to a row vector in MATLAB, you can follow these steps:

1. Define the symbolic polynomial fraction using the sym function. For example, if you have a fraction (3x^2 + 2x + 1)/(x + 1), you can define it as follows:

syms x
fraction = (3x^2 + 2x + 1)/(x + 1);

1. Use the coeffs function to extract the coefficients of the numerator and denominator polynomials. This function returns the coefficients in descending order. For example:

num_coeffs = coeffs(fraction.numerator, x);
denom_coeffs = coeffs(fraction.denominator, x);

1. Use the fliplr function to reverse the order of the coefficients. This step is necessary because the coeffs function returns the coefficients in descending order, but we want them in ascending order. For example:

num_coeffs = fliplr(num_coeffs);
denom_coeffs = fliplr(denom_coeffs);

1. Create a row vector by concatenating the numerator and denominator coefficients. For example:

row_vector = [num_coeffs, denom_coeffs];

Now the row_vector variable contains the coefficients of the numerator and denominator polynomials in a row vector format.

Please note that the sym and coeffs functions are part of the Symbolic Math Toolbox in MATLAB. Make sure you have this toolbox installed and loaded before using these functions.