poisson

提供函数能进行1维2维的FFT，输入输出的序列长度应为2的整数次方倍(Provides functions can be one-dimensional two-dimensional FFT, sequence length input and output should be an integer power of 2 times)

用c++实现m次多项式的曲线拟合，改程序简单易懂，可读性强(it s easy)

四阶龙格库塔法，用C++编写，很有参考价值(Fourth-order Runge-Kutta method, written in C, a good reference)

基于Wegstein方法的求解方程的C++程序。(Wegstein-based method for solving equations C++ program.)

盒维数计算和豪斯多夫维数的计算与应用研究程序(box counting)

焊接模拟，fluent，电弧udf，钨极氩弧焊，源项(Welding simulation, fluent, arc udf, TIG welding, the source term)

多项式的加减法运算，输入的多项式带有未知数x和数字(Polynomial addition and subtraction calculations)

一圆形游泳池如图所示，现在需在其周围建一圆形过道，并在其四周围上栅栏。 栅栏价格为35元/米，过道造价为20元/平方米。 过道宽度为3米， 游泳池半径由键盘输入。 要求编程计算并输出过道和栅栏的造价。(A circular pool as shown in figure, now in its built around to a circular corridor, and in its 4 around on the fence. The fence for 35 yuan/m price, corridor cost for 20 yuan/square metre. Aisle width is 3 meters, The radius of the swimming pool by keyboard input. Demand and output programming calculation of corridor and the cost of the fence. )

C语言实现大数的加法减法以及乘法,水平限于仅仅大学生水平学习使用。(Use C language to achieve that addition, subtraction, and multiplication of a big intger.)

Algorithm gauss seidel load flow