1.

You are my only algebraic solution.

2.

You are like ∫f(x')dx, and I am like f(x). I am only one of your choices, but you are my only solution.

3.

You are my linear regression equation. Without you, I will always be just some wandering points.

4.

Dear, you are my element. Without you, my collection will always be empty.

5.

If my heart is the X axis, then you are a parabola with an upward opening and a negative δ, which will always be in my heart.

6.

Your smile must be a sufficient condition for my existence here.

7.

A zero vector can have many directions, but only one length. Just like I can have many friends, but there is only one you, which deserves my protection.

8.

Our heart is a circle, because its eccentricity is always zero.

9.

We are parabola, you are the focus and I am the directrix. I miss you as much as you miss me.

10.

My feelings for you are like an exponential function based on the natural constant e, no matter how many storms you go through, you still don't change your true colors, and your true feelings will last forever.

1 1.

I bring you surprises and hopes every day, just like every element in an infinite set. Although inexhaustible, inexhaustible, but different.

12.

You are my necessary and sufficient condition. I can't be pushed out without you. I can't push you out without me. So we live together!

13.

You are my coordinate system.

Without you, I will never find my place.

You are my monotone increasing function.

With you, my happiness is getting better every day.

14.

There is an affectionate symbol in mathematics: π misses you, knows no end, and refuses to look back.

15.

My heart is like a natural number 1. Whether standing, lying, or standing upside down, or 1, it will not change.