Well, hi everyone I decided to start again with tutorial I left back years ago. But i think it’s a good way to start talking again. So, I want to present my own building Iwrote this morning: how to draw a butterfly with parametric plot. It’s a weekendTutorial. And see this approach using painting. Because is always the first one immediate. That’s right. It has been an horrible week. Now, let’s go back and foreward. The first function is the one for controlling the x: Call the first one – horizontal function butterflyX (u) [ I don’t know anything about math, you know. And I take it as well as…