MATLAB Function Reference    

Polynomials

conv Convolution and polynomial multiplication
deconv Deconvolution and polynomial division
poly Polynomial with specified roots
polyder Polynomial derivative
polyeig Polynomial eigenvalue problem
polyfit Polynomial curve fitting
polyint Analytic polynomial integration
polyval Polynomial evaluation
polyvalm Matrix polynomial evaluation
residue Convert between partial fraction expansion and polynomial coefficients
roots Polynomial roots

  Data Analysis and Fourier Transforms Interpolation and Computational Geometry