函数涂鸦板于2013-6-9晚进行了更新,更新的主要特性有:

  • 支持隐函数作图!可以直接输入这个函数:sin(x)+tan(y)=0 来得到图像了。本函数作图工具完全基于客户端 JavaScript,在国内是第一款,无人能敌。在国外,也有 JavaScript 函数作图工具,如强大的 desmos,但是它仅支持很少的隐函数种类(多项式,其中一个变量必须为2次方)。
  • 支持 LaTex 表达式,引入了 MathQuill,将表达式显示得更加漂亮。
  • 支持图形保存,鼠标右键可以将当前的图形“另存为……”到计算机磁盘中。

以下为截图:

函数涂鸦板-在线隐函数作图

未来更新点:

- 不等式作图

- 定义域指定功能

 

Online Function Grapher was updated on 2013-6-9 night. The major features involved are:

  • Supporting implicit function plotting. Now you can input like this: sin(x)+tan(y)=0 to get its graph. This function graphing tool is totally based on JavaScript, it’s the first one in China. In the world, there is a powerful online graphing tool desmos, who is also based on JavaScript. But it can only draw quite few kinds of implicit functions (Polynomial, must have one variable be quadratic).
  • Supporting LaTex expressions. Now the expression looks more beautiful by having employed MathQuill.
  • Supporting graph saving. You can simply right click the graph and “Save as…” a picture to your computer disk.

Screen shot:

implict-plot

More features need to be updated in future:

- Plotting for inequalities

- Domain specifying