中文说明：程序用于MATLAB二维画图，可以画各种简单函数的图像，比如三角函数，指数函数，对数函数，幂函数等，还可以改变图像颜色等属性
English Description：
Used MATLAB two-dimensional drawings, images can draw various simple functions such as trigonometric functions, exponential functions, logarithmic functions, power function, you can also change the image properties such as color