内容：
为了解决原函数完全未知、原函数已知但其形式复杂、原函数已知且存在解析解3种情况下的复杂积分计算问题,提出了关于数值积分界面的设计。将Matiab中可开发的GUI工具结合数值积分计算中的典型算法构造开放式的用户界面,设计出数值积分求解器并实现数值积分可视化功能;同时通过采用自定义方式设置积分区间等分数的思路,提高了梯形、辛普森、复合梯形、高斯-勒让德数和自适应5种积分方法的计算精度。最后,用所设计的数值积分GUI界面对3种类型复杂积分函数进行验证和求解,结果表明,该设计能在同一界面同时实现用5种积分方法按用户任意设定的精度进行积分求解并能将计算结果可视化,因此该界面具有适应性强、使用方便、界面友好、操作简洁的优点。 In order to solve the problem that the original function is completely unknown, the original function is known but its form is complex, the original function is known and there are analytic solutions in three cases, the design of numerical integration interface is put forward. The digital user can be developed in Matiab combined with the typical algorithm in numerical integration calculation to design the numerical integration solver and realize the numerical integration visualization function. At the same time, through the idea of setting the integral interval and so on, The accuracy of the calculation of trapezoidal, Simpson, composite trapezoid, Gaussian - Llein number and adaptive 5 integral methods is improved. Finally, the three-type complex integral function is verified and solved by using the numerical integration GUI interface. The results show that the design can be solved by using the five integral methods according to the accuracy of the user's arbitrary setting. The visualization of the results, so the interface has a strong adaptability, easy to use, user-friendly, simple operation advantages.

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