Polynômes
Les polynômes sont des équations comportant une seule variable avec des exposants entiers non négatifs. MATLAB® représente les polynômes par des vecteurs numériques contenant les coefficients polynomiaux classés dans l’ordre des puissances décroissantes. Par exemple, [1 -4 4]
correspond à x2 - 4x + 4. Pour plus d’informations, consultez Create and Evaluate Polynomials.
Fonctions
poly | Polynomial with specified roots or characteristic polynomial |
polydiv | Polynomial long division (depuis R2024a) |
polyeig | Polynomial eigenvalue problem |
polyfit | Ajuster des courbes polynomiales |
residue | Partial fraction expansion (partial fraction decomposition) |
roots | Racines polynomiales |
polyval | Polynomial evaluation |
polyvalm | Matrix polynomial evaluation |
conv | Convolution et multiplication polynomiale |
deconv | Least-squares deconvolution and polynomial division |
polyint | Polynomial integration |
polyder | Polynomial differentiation |
Rubriques
- Create and Evaluate Polynomials
This example shows how to represent a polynomial as a vector in MATLAB® and evaluate the polynomial at points of interest.
- Roots of Polynomials
Calculate polynomial roots numerically, graphically, or symbolically.
- Integrate and Differentiate Polynomials
This example shows how to use the
polyint
andpolyder
functions to analytically integrate or differentiate any polynomial represented by a vector of coefficients. - Polynomial Curve Fitting
This example shows how to fit a polynomial curve to a set of data points using the
polyfit
function. - Programmatic Fitting
There are many functions in MATLAB that are useful for data fitting.