2 t 100 -- - 10 - 20*t - --- - 10 t t
100 -20 - --- - 19*t t
-20.0 - 20.0*t - 100.0/t + t^2/t
2 -100 - 20*t - 19*t ------------------- t
-100 - 10*t + t*(-10 - 19*t) ---------------------------- t
2 t 100 -20 + -- - 20*t - --- t t
/ 2 \ -\100 + 19*t + 20*t/ ---------------------- t