Joke Collection Website - Joke collection - In what class did you learn the heart-shaped function?

In what class did you learn the heart-shaped function?

Elective course 4 of senior two mathematics, polar coordinate equation. According to today's headline query, we know that heart-shaped function is studied in polar coordinate equation, an elective course in senior two mathematics. Heart-shaped function is a formula of Descartes' love for Christine, and only they can understand love words. This curve is the famous "heart line".