The video shows a close-up shot of a person's hand holding a blue marker and writing on a piece of paper. The person is writing a mathematical equation, which appears to be a complex algebraic expression involving variables and functions. The handwriting is neat and legible, and the person seems to be focused on the task at hand. The paper is white, and the blue ink stands out against the background. The video does not show the person's face or any other part of their body, and there is no audio or background music.