plot{x-3ln x, (x- 4.536403655)(x+4.536403655-6)/(x+4.536403655),(x-4.536403655)((4 4.536403655-3)(x-4.536403655)+ 6 4.536403655(4.536403655-3))/(2 4.536403655(2x+4.536403655))}, {x,3.,32}