Recent content by benice

[SIZE="4"]Circle Rolling around Rolling Circle (1) Circle 1 rolls around inside of the fixed base circle. Circle 2 rolls around inside of Circle 1.

Hi, We can find a function fun for a triangle such that: * fun(x,y) = 0 if (x,y) lies on the triangle, i.e., fun(x,y) = 0 is an equation for the triangle; * fun(x,y) < 0 if (x,y) lies inside the triangle; * fun(x,y) > 0 if (x,y) lies outside the triangle. The function for the triangle...

Answers Answers: A funny 3D image: A funny curve: The above graphics were created completely using math formulas and math softwares.

Hint Consider the intersection of a horizontal plane with the surface. The intersection consists of a family of funny curves. (An example curve is shown below. It has nothing to do with the answer.) Cut off the upper surface above the horizontal plane to get a funny 3D image. (This...

The surface in above image is a portion of the graph of some mathematical equation. Let's do some brainstorming: Can you guess what's inside the surface? . .