* 用拉格朗日插值法依据N个已知数据点即使函数值 * 输入: n--已知数据点的个数N-1 * x--已知数据点第一坐标的N维列向量 * y--已知数据点第二坐标的N维列向量 * xx-插值点第一坐标 * 输出: 函数返回值所求插值点的第二坐标 -* Use Lagrange interpolation method based on N-known data points even function * Input : n -- known data poi

数值方法里面的用lagrange插值发求解线形方程的算法,可以用来解线形方程组的习题-The inside of the numerical methods used though laser hair interpolation algorithm for solving linear equations, problem sets can be used to solve the linear system of equations