使用变步长梯形法和Romberg积分法实现1到3上分别对e^x和1/x的积分-Trapezoidal method using variable step size and Romberg integration method to achieve 1-3 respectively for e ^ x and 1/x is integral

基于c的多项式各项运算，包括：和差积商、求导、求积分、求余数等各项运算-Based on the polynomial of the polynomial computing, including: and the difference between the product, seeking, seeking integral, seeking the remainder and other operations

掌握MATLAB的基本符号运算,在微积分中的应用,在线性代数中的应用-Master the basic symbolic operation of MATLAB in the application of differential and integral calculus, its application in linear algebra

C语言的连分式求二重积分,返回积分近似值 可供相关设计人员参考(In C language, a double integral is obtained, which can be used to refer to the relevant designer.)