本文主要研究了高阶差分和低阶差分的不足，从而提出了一种新型的混合差分法，这种方法比高低阶差分都优越In the light of deFects of the high order diFFerence and low order diFFerence,a new type of hybrid diFFerence method is put Forward in this paper.The method has advantage over the high order diFFerence method and low order diFFerence method
