【摘要】 讨论二次插值样条的保凸问题，即：当型值点为数较多，且点点通过型值点的二次保凸插值样条不存在时，如何引入广义二次保凸插值样条，此种样条属于Ｃ＂类曲线。更多还原

【Abstract】 In this paper we give the definition of the convexity-preserving interpolation of a given function y(x).A necessary and sufficient condition is provided for the quadratic spline with the convexity-preserving interpolation and a method of building convexity-preserving interpolation is presented.更多还原