已知函數(shù)f(x)=lnx+1ax.
(1)討論f(x)的單調(diào)性;
(2)若(ex1)x2=(ex2)x1(e是自然對(duì)數(shù)的底數(shù)),且x1>0,x2>0,x1≠x2,證明:x21+x22>2.
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發(fā)布:2024/7/19 8:0:9組卷:236引用:6難度:0.3
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