基于Chebyshev多项式零点的Lagrange插值多项式逼近的注记

A Remark on the Approximation of Lagrange Interpolation Polynomials Based on the Chebyshev Nodes

本文通过一个例子说明了文献[3]中定理6.9的不完善之处,并建立了:若f∈C[-1.1]。

In the paper,we construct a counter example to illustrate the imperfection of The-orem 6.9 in[3].Moreover we establish the following theorem:If f∈C[-1,1],then