Differential Drive Kinematics for Robotics

For my robotics team at Bow High School, team 3773C, I wanted to make a simulator of the drivetrain - in other words, calculate the x-position, y-position, and rotation of the robot at a given time if the velocity of the left and right drivetrains were at a given velocity. That way, if my teammates are busy doing mechanical work on the robot, I can simulate what my code might look like.

I am going to turn this Desmos project into Python code. That way, the Python code will be able to read the actual drive code for the robot, and will simulate where those lines of code will actually take the robot.

UPDATE:
Our team attended the Pemibaker VEX Robotics meet at Plymouth Regional High School, and we won the Innovate Award for our simulator!