For any of the following, click evaluate to render the image. It may take a few seconds to load. Once you see the image you may need to click again to be able to resize it by scrolling, or drag around to rotate the image. By right-clicking, you can reset the view to the first octant among other things.
The path along \(x=0\) is in black, and the path along \(y=0\) is in green. From this it should be easier to see how you could have two different limits along different paths.