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1·So, the contour plot looks like that.

等高线图看起来是这样的。

2·Label a contour plot.

形网格绘制等值线。

3·So, what contour plot looks something like this?

因此，等高线图看起来就像这样？

4·So, now, I'm picking a point on the contour plot.

现在，在等高线图上取一点。

5·So, the contour plot, well, let me actually zoom out.

我们来放大它的等高线图。

6·OK, so that's an example of a contour plot of a function.

这就是一个关于函数等高线图的例子。

7·The second problem is one about writing a contour plot.

第二题是找等高线。

8·That is the contour plot of f with a hyperbola on top of it.

上面这个是f的等高线，黄色的就是双曲线。

9·So, here I have a contour plot of a function, and I have a blue vector.

我这里有一个函数的等值线图，还有一个蓝色的向量。

10·And then, the contour plot will be the topographical map for this graph.

等高线就像是这幅图的地形图。