A Padé approximant perturbed with a Chebyshev polynomial of the first kind to reduce the leading coefficient in the error.
Economized Rational Approximation
See also
Padé ApproximantExplore with Wolfram|Alpha
Cite this as:
Weisstein, Eric W. "Economized Rational Approximation." From MathWorld--A Wolfram Web Resource. https://mathworld.wolfram.com/EconomizedRationalApproximation.html