1 How to use this software, first of all in the Please enter the function y =...

代码说明：

如何使用本软件 1、首先在“请输入函数 y=”后面的输入框中输入您想要画图的函数形式，注意，其中乘除幂运算符必须在前面加点，否则会出错画不出来。 2、在“请输入区间 x 从”…“到”…的输入框中输入您想要画图的区间，也就是自变量的取值范围。 3、点击“画图”按钮，即可画出函数的图形。 4、点击“关闭”按钮，可以退出本软件。-1 How to use this software, first of all in the Please enter the function y = behind the input box, enter the function you want to draw the form of attention, in which multiplication and division operator must power points in front, otherwise they will not come out wrong painting. 2, in the Please enter the range of x from the ... to ... the input box, enter the interval you want to draw, that is, since the variables range. 3, click on the Paint button, you can draw function graphics. 4, click Close button, you can withdraw from this software.