设g(x)=px-qx-2f(x),其中f(x)=lnx,且g(e)=qe-pe 发布时间:2017-04-24 15:31 │ 来源:www.tikuol.com 题型:解答题 问题: 设g(x)=px-qx-2f(x),其中f(x)=lnx,且g(e)=qe-pe-2.(e为自然对数的底数)(I)求p与q的关系;(Ⅱ)若g(x)在其定义域内为单调函数,求p的取值范围;(Ⅲ)证明:①f(1+x)≤x(x>-1);②ln222+ln332+…+lnnn2<2n2-n-14(n+1)(n∈N,n≥2).
题型:解答题 Trees will improve the air and make the park _______ beautiful. [ ]A. to look B. looking C. look D. looked 查看答案