插商表2 x4|fx)-阶差商二阶差商三阶差商 n阶差商 单元号 f(x0) F(0) x,f(x) f[xo,x, x2f(x2)fIx, x21 f[xo, x, x21 F(2) x3 f(x,)f[x2,-x31f[x,x2,x3 1 x,If(n) f[,]I f[xm-2, m-1, x,] f[rm-3, m-2,xm-l,*, fx,x…,x]F(n插商表2 k x ( ) k f x 一阶差商 二阶差商 三阶差商 n 阶差商 单元号 0 x ( ) 0 f x F(0) 1 x ( ) 1 f x 0 1 f x x [ , ] F(1) 2 x ( ) 2 f x 1 2 f x x [ , ] 0 1 2 f x x x [ , , ] F(2) 3 x ( ) 3 f x 2 3 f x x [ , ] 1 2 3 f x x x [ , , ] F(3) n x ( ) n f x 1 [ , ] n n f x x − 2 1 [ , , ] n n n f x x x − − 3 2 1 [ , , , ] n n n n f x x x x − − − 0 1 [ , , , ] n f x x x  F(n)