a = 0.0028000000000000004 (slider from -0.005 to 0.005, step 0.000010)
b = 0 (slider from -50 to 50, step 5)
A1 = 0
A2 = 50
A = (-220.09290540540525, -79.82012610755513)
B: (220.09291, -79.82013)
I_1 = (-326.2246621621621, -324.2275370064372)
I_2: (280, y(I_1))