Google 3D Graphing

Via my son. Erik, who is finishing up his BSEE this Spring, I learn that there are a few things I do not know about Google. Try this! (insert into Google):

• sqrt(x*x+y*y)+3*cos(sqrt(x*x+y*y))+5

Here is another example, with the image! (click to maximize)

• 3*cos(sqrt(x*x+y*y))+10

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I knew there was a reason I paid thousands and thousands of dollars to allow Erik to get his engineering degree ... to keep me informed about Google's latest tricks!