绘制一元函数曲线的工具 输入C语言语法的函数公式, 即可绘制函数的二维曲线 采用内置编译器和虚拟机(这是调整OK的版本)-Rendering 1 Function Curve tool input C language grammar function formula, you can draw two-dimensional curve function with built-compiler and virtual machine (which is OK adjust version)