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MacWorld 1998 October
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Macworld (1998-10).dmg
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Serious Demos
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Graphing Calculator 2.1 Demo
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Graphing Calculator 2.1 Demo.rsrc
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STR#_1404.txt
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1998-08-07
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To animate a 3D surface, include n in the function.
In a 3D surface, theta is the angle of (x,y) from the x axis. It goes from -π to +π.
In a 3D surface, r is the distance of (x,y) from (0,0).
To graph a 3D surface, type a function of x and y, starting with “z=”.