从几何上看，函数可以用这个图像表示，固定某个点。

So, geometrically, my function can be represented by this graph, and I fix some point,.

youdao

从几何上看，函数可以用这个图像表示，固定某个点。

So, geometrically, my function can be represented by this graph, and I fix some point,.

youdao