1, r=a( 1-sin days)

It is said that this is the content of Descartes' last love letter, which contains an unforgettable secret.

2 、( x2+y2)- 16*abs(x)*y=225

My whole life is waiting for someone who can hand-draw this function for me. For aesthetic needs, our heart-shaped graphics are often like this.

3、X2+(y+3/X2)2= 1

Draw a function image, which is a heart.

4、Y= 1/X、X2+Y2=9、Y= -2X、X=-3 SinY。

Also draw a function diagram, that is, ILVE.

5、 128/e986

Wipe off about half. If you don't, I love you.

6.r=a( 1-cos days) or r=a( 1+cos days) (a>0) in horizontal direction.

Health and emotional line

7、x2+(y-3/x2)2= 1

A love is formed on the number axis, which is the exclusive "love curve" of the Department of Mathematics.

Elementalism, courage and mutual understanding;

1, the element theory of love

The three elements of love are intimacy, enthusiasm and determination. Intimacy refers to the intimate relationship between each other. Enthusiasm refers to the passion and romance for each other, and determination refers to establishing a long-term relationship with each other. These three elements complement each other and are indispensable.

2. Be brave.

If we lack the courage to express ourselves, then we can't build close relationships, let alone feel passionate and romantic. And if we lack the determination and courage to maintain this relationship, it will also make us lose this beautiful relationship.

3, mutual understanding ditch brigade and shentong.

From the perspective of nonviolent communication theory, courage and confession are also very important. Disrespect in a relationship, communication is the key. Confession is a non-violent way of communication, which makes people bravely express their feelings to each other, and at the same time, it can also make them better understand and build deeper trust and understanding.