Note that the search is not even an "equation" (that would be z = x*sin(y) ). Google always graphed equations -- I often use a google tab like a nice low-memor

Note that the search is not even an "equation" (that would be z = x*sin(y) ). Google always graphed equations -- I often use a google tab like a nice low-memory-footprint version of MATLAB basically -- but I didn't know it assumed the third axis when you created a non-linear expression and made it an equation.