这个题怎么解啊!!??!

2025-02-24 16:12:27
推荐回答(1个)
回答1:

g(x) = lnx + 1/x
g'(x) = 1/x - 1/x^2 = (x-1)/x^2
x = 1时,g'(x) = 0, g(1) = 1最小
(0,1)单调减
(1,+inf)单调增