Question: Maple Commands for exp function?

I'm trying to graph a contour map of this function: e^(y/x)

>with(plots)

>contourplot(e^(y/x),x=-3..3,y=-0.5..0.5)

 

I thought the contour map for this function would looks more like several lines intersects at the origin. But when I graph it on Maple, it doesn't looks like the graph I'm looking for.

 

Did I put in a wrong range?

 

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