摘要
研究Bernstein多项式的导数对可导函数的整体逼近,利用K-泛函和光滑模的方法。
The global approximation of dervatives of Bernstein polynomials for the derivable functions is studied. By methods of K functional and moduli of smoothness the direct and inverse theorems of simuitaneous approximation are established.
出处
《西南民族学院学报(自然科学版)》
1998年第4期358-362,共5页
Journal of Southwest Nationalities College(Natural Science Edition)
关键词
导数
收敛速度
伯恩斯坦多项式
逼近
光滑模
Bernstein polynomials,dervatives,convergence,direct theorem,inverse theorem