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第六章 连续函数的最佳逼近

第六章 连续函数的最佳逼近. 第一节 连续函数的最佳平方逼近. 第二节 离散数据的最小二乘拟合. 第三节 连续函数的最佳一致逼近. 引 言. 连续函数最佳逼近的一般提法. 第一节 连续函数的最佳平方逼近. 连续函数最佳平方问题的一般提法. 一、 H 中最佳平方逼近函数的存在性. H. 几何解释:. 方程组( 1 )、( 2 )称为 法方程 。. 二、构造 s(x) 的具体方法. 解法方程 GC=F 求出 C 以后,就可得到最佳平 方逼近函数. 证: 法方程组的系数矩阵为. 三、逼近误差. 四、用多项式空间作为逼近函数类.

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第六章 连续函数的最佳逼近

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