Chebfun Examples: Approximation of functions
Absolute value approximations by rationals (html, M-file)
Best approximation with the Remez command (html, M-file)
Chebyshev Coefficients (html, M-file)
Chebyshev interpolation of oscillatory entire functions (html, M-file)
Chebyshev polynomials as plotted by Higham and Higham (html, M-file)
Convergence rates for interpolating functions (html, M-file)
The FFT in Chebfun (html, M-file)
The gamma function and its poles (html, M-file)
A greedy algorithm for choosing interpolation points (html, M-file)
Halphen's constant for approximation of exp(x) (html, M-file)
Lebesgue functions and Lebesgue constants (html, M-file)
Local complexity of a function (html, M-file)
Orthogonal polynomials via the Gram-Schmidt process (html, M-file)
Orthogonal polynomials via the Lanczos process (html, M-file)
Polynomial basis for Hermite interpolation (html, M-file)
Rational interpolation, robust and non-robust (html, M-file)
A wiggly function and its best approximations (html, M-file)