作业
....\1.Lagrange差值.txt
....\2.Newton插值算法.txt
....\3.romberg.txt
....\4.指数拟合.txt
....\5.newton迭代.txt
....\6.Rungkutta.txt
....\6.Rungkutta步长.txt
....\7.gauss消元.txt
....\8.jacobi.txt