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Google Search has been graphing equations for a few months. Now it does 3D graphs too. They're interactive: you can spin them around, zoom, and change the range. It's pretty cool – find out more in the Fridaygram on Google Developers Blog.

http://googledevelopers.blogspot.com/2012/04/fridaygram-3d-graphs-battling-bacteria.html

Plus: plasma flashlights and virtual museum visits. Enjoy!
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4 comments
 
sqrt(x*x+y*y)+3*cos(sqrt(x*x+y*y))+5 from -20 to 20

and you can say ty ;)
Zamir P
 
Played around with it https://www.google.com/search?sourceid=chrome&ie=UTF-8&q=sqrt(x*x%2By*y)%2B3*cos(sqrt(x*x%2By*y))%2B5+from+-20+to+20#hl=en&sclient=psy-ab&q=sqrt(x*x%2By*y)%2B300*cos(sqrt(x*x%2By*y))%2B60+from+-20+to+20&oq=sqrt(x*x%2By*y)%2B300*cos(sqrt(x*x%2By*y))%2B60+from+-20+to+20&aq=f&aqi=&aql=&gs_l=serp.3...12561l12741l10l12936l2l2l0l0l0l1l197l297l0j2l2l0.frgbld.&pbx=1&bav=on.2,or.r_gc.r_pw.r_cp.r_qf.,cf.osb&fp=87c6230bd8e448f1&biw=1422&bih=772
 
To make this work on Linux, launch Chrome with the parameters --enable-webgl and --ignore-gpu-blacklist
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