21. "' Rational motions "'are defined by rational functions ( ratio of two polynomial functions ) of time. 22. By the Weierstrass approximation theorem, any given uniformly approximated as closely as desired by a polynomial function . 23. The Galerkin method expands the field equations into polynomial functions such as Gegenbauer polynomials or Chebyshev polynomials. 24. A non constant polynomial function tends to infinity when the variable increases indefinitely ( in absolute value ). 25. A "'polynomial function "'is a function that is defined by a polynomial, or, equivalently, by a polynomial expression. 26. Or to any polynomial function of x ? talk ) 00 : 40, 22 September 2013 ( UTC) 27. Babbage began in 1822 with what he called the difference engine, made to compute values of polynomial functions . 28. The " order of growth " is then the least degree of any such polynomial function " p ". 29. The most immediate case is to apply polynomial functions to a square matrix, extending what has just been discussed. 30. For defining a " polynomial function over the affine space ", one has to choose an affine coordinate system.
