This program solves the mirror problems for physics You input the radius and the Do(distance of object) and it gives you the focus Di(distance of image) and the magnification Solves for concave and convex mirrors if the mirror is convex just make sure that you input a negative radius also solves for normal(flat) mirrors If you have any questions about this program or basic programming i can try and help you out. just email me khameleon69@hotmail.com