作者: Peter B. Borwein
DOI:
关键词: Discrete mathematics 、 Degree (graph theory) 、 Rational function 、 Mathematics
摘要: The following estimate is derived for the error in approximating e by rational functions. Let r denote polynomials of degree at most n. THEOREM. Let, Ya,'" ",Yan+t be points (not necessarily distinct) (0,a), a<2. Choose Pn, Qrn so that