/4 - x 5 + x\ lim |----- + -----| x->0+\ 4*x 5*x /
Limit((4 - x)/((4*x)) + (5 + x)/((5*x)), x, 0)
oo
= 301.95
/4 - x 5 + x\ lim |----- + -----| x->0-\ 4*x 5*x /
-oo
= -302.05
301.95