[Google]graph calculator

hbghlyj

画$\exp(1/x)$当$x$趋近0时画错了 右下角提示:The function might not be plotted correctly.
画$\exp(x)$作为对比: (没有右下角的提示)
画$\exp(1/(x^2+y^2))$ (WebGL,自动旋转)

Calculator > How to graph equations

You can graph complicated equations quickly by entering your functions into the search box. You can see what a sample equation looks like here.

Tips

    To plot multiple functions together, separate the formulas with a comma.
    To explore the function in more detail, zoom in and out and pan across the plane.

Functions you can graph

    Trigonometric
    Exponential
    Logarithmic
    3D graphs (for desktop browsers that support WebGL)

hbghlyj

画$\exp(1/x)$当$x$趋近0时把画错了
右下角提示:The function might not be plotted correctly.

对比一下WolframAlpha作的图像

\[\lim_{x\to0^+} \exp(1/x) = ∞\]\[\lim_{x\to0^-} \exp(1/x) = 0\]

鼠标置于图像上方时会显示一条水平和一条竖直的细线,但不会显示坐标,似乎没有其它作用.