(0,+8)Pt<WX!{|}\r(2)3\r(3){|}\rw|}z\r(I)| WXf(x)8(0,+8)Pt<WX!ÔÕ \rJtf(x)=ê(x>0),23f(x)=ë)1+ì!\r=Jtx>0.23>0!ln(l+%)>0,23/'(x)<0,\r@WXf(x)8(0,+oo)Pt<WX.\r(2)| ~/(X)>-^ÂÃÄ!@\r<x+l+(x+l)m(*+l)ÂÃÄ,\rx+1X\r@k<p+l+(z+l)ln(x+l)l,\rLxJminEvaluationWarning:ThedocumentwascreatedwithSpire.PDFfor.NET.\rí×%Ø=x+l+×x+lØm×!+lØ,îïG>0,239ð=XTTò+D\r'g(x)=x-1-ln(x+1),g'(x)=1=W>0!@g(x)8(0,+8)tFWX,\r=g(2)=1-ln3<0,g(3)=2-21n2>0,\r@¦8§\Xa6(2,3),óôg(a)=a-1-ln(a+1)=0,\r?%>aA!g(x)>0,>0,?OVXVQA!g(x)<0,h(x)<0,\r@WXh(%)8(0,a)t<WX!8(a,+8)tFWX!\rMWmin=ö9)=a+l+(a+l)+l)=a+l+(a+l)(a-l)=a+1&(3,4),\r«Xk\¬Ëlt3.\r÷ ~(2)V‘?ùúûû+1)>ü=2îïx>°,\r'x=n(n+l),þl+n(n+l)]>2>2ÿ=203(`p?)\rln(l+1x2)+ln(l+2x3)4-ln(l+3x4)+-+ln[l+n(n+1)]\r>[2-3(1-[20(]+[20(`+~+[203&p$]\r=27103(10>27i-3,\r(1+lx2)(14-2x3)(1+3x4)[1+n(n+1)]>e2n-3