Task1
Search for relevant materials to explore the knowledge of the sinc function (or Sa function) (300 - 500 words). For example, you may introduce its mathematical background and history, key properties, and connections with the development of other disciplines. In addition, identify at least two different engineering application areas (such as communications, audio processing, or image processing) and explain its role in practical problems.
题目拆解：
- sinc表达式，历史背景，性质，connections with the development of other disciplines？
- 应用介绍：MRI RF pulse + 声学领域
回答格式：
- 表达式，性质和历史背景，和其他定理的关系 呈现形式：表达式，文本，图片
- 工程应用：两个应用的简单介绍，MRI详细一点（尤其强调傅里叶频谱在flip-angle近似下和横向磁场强度的频谱正比，因此方形频谱拥有很好的片选性）
修改建议：
- 形式上，缺少插图，itemize格式很丑，ai味道浓
- 历史阐述不清，性质和理论缠绕，性质归性质，理论归理论 修改步骤：
- 给公式增加灰色框
- 改历史
- 插入图片
Task2
Use MATLAB to visualize the sinc function (or Sa function). You are required to write a program and generate a plot, mark special points in the figure (such as the maximum value and zero points), and submit both the program code and the resulting graph.
题目拆解： 使用MATLAB可视化，（代码+图片），标记特殊点（最大值，零点）