>>897 一様収束するけど有界じゃない例
区間I = [0,1]
f_n(x) = 0 (for x=0)
f_n(x) = 1/x (for 0<x<1/2)
f_n(x) = 1/x + 1/n (for 1/2≦x≦1)

f(x) = 0 (for x=0)
f(x) = 1/x (for 0<x≦1)