三条样条插值函数程序x=[1 4 9 16 25 36 49 64 81] y=[1 2 3 4 5 6 7 8 9] -Three spline interpolation procedure x = [1 4 9 16 25 36 49 64 81] y = [1 2 3 4 5 6 7 8 9]