The image is a photograph of a piece of paper with mathematical equations written on it. The equations are written in black ink and are arranged in a grid-like pattern. The paper appears to be a worksheet or a notebook, as there are several lines and equations visible on the page.

The equations are related to a waveform, which is a mathematical equation that shows the relationship between the two variables. The waveform is represented by a red line, which represents the current and voltage of the waveform. The red line represents the voltage, while the blue line represents a voltage. The equation is written in a simple, handwritten style, with the x-axis representing the time and the y-axis indicating the voltage. 

There are also several other equations written in red ink on the paper, which appear to be related to the equations. Some of the equations are labeled with numbers, while others are not. The background of the image is white, and there is a blue circuit board visible in the top left corner.