The image shows a piece of paper with handwritten content on it. On the left side of the paper, there's a mathematical equation written in blue ink. The right side contains various calculations and notes, also written in blue ink. There are several corrections and annotations made by someone else, using yellow highlighter to emphasize certain parts. At the bottom of the page, there is a personal message written in black ink, which appears to be a well-wishing note for someone on their birthday or a similar special occasion. The text at the bottom includes wishes for happiness and growth, as well as an indication that the sender appreciates the recipient's friendship.