2, teacher, I wish you endless happiness, positive slope of physical function and smooth work as a smooth curve!
3. I wish my beloved teacher a y = kx(x & gt；; 0) same, thriving!
4. Teacher, you are like X. Without you, my equation has no future. Teacher, you are like a straight line, pushing the infinite extension of my line segment.
5. You are our fitting equation. Without you, we are just a bunch of scattered dots.
You are our exponential function. Without you, we can only move forward slowly.
You are our coordinate system. Without you, we wouldn't have a clear understanding of the world.
You are our trigonometric function. Without you, we wouldn't know that life is ups and downs.