给定n个节点xi[i=0,1,...,n-1]上的函数值yi=f[xi]及精度要求，用阿克玛方法计算指定指定子区间上的三次插值多项式与指定插值点t处的函数近似值z=f[t]-Given n nodes xi [i = 0,1 ,..., n-1] on the function values yi = f [xi] and the accuracy requirements specified by Arkema method specified sub-interval on the cubic interpolation polynomial interpolation points with the designated Office, a function of t approximation z = f [t]