Cai Tianxin, a teacher in the Department of Mathematics of Zhejiang University, once said: "Mathematics is the most romantic, and it is more sensational than any other language in the world. 9 said to 3, I am still you except you; 4 said to 2, I am still 2 except 2; 1 said to 0, everything is meaningless except you; 0 said to 1, I am the only one except you ... "
A point on a circle rolls around another circle that is tangent to it and has the same radius. It goes round and round tirelessly, and the final trajectory is a beating heart.
The geometric coordinate diagram of r=a( 1-sinθ) is also a love curve that has been circulating for a hundred years. The whole curve is drawn as a romantic heart line.
Besides, there are many love experts hidden in mathematics. The overbearing president in mathematics: only one, obsession in mathematics: continuous establishment, breakup guru in mathematics: intersection, eternal spare tire in mathematics: assuming existence, first love of youth in mathematics: merging similar items.