已知lnx ≤ x-1 求证ln(2^2)/2^2+ln(3^2)/3^2+……ln(n^2)/n^2<(2n^2-n+1)/2(n+1)

来源:学生作业帮助网 编辑:作业帮 时间:2024/11/15 00:16:04
已知lnx ≤ x-1 求证ln(2^2)/2^2+ln(3^2)/3^2+……ln(n^2)/n^2<(2n^2-n+1)/2(n+1)
x){}Ks*u.Q5TxƜ< 8#M} d@BQ2 D=s0t 4@MR>/ˁA~qAbR0i붧l =bg>^#'OUFAh!gkk6PWr !)(

已知lnx ≤ x-1 求证ln(2^2)/2^2+ln(3^2)/3^2+……ln(n^2)/n^2<(2n^2-n+1)/2(n+1)
已知lnx ≤ x-1 求证ln(2^2)/2^2+ln(3^2)/3^2+……ln(n^2)/n^2<(2n^2-n+1)/2(n+1)

已知lnx ≤ x-1 求证ln(2^2)/2^2+ln(3^2)/3^2+……ln(n^2)/n^2<(2n^2-n+1)/2(n+1)
ln(k^2)/k^2

其实,正确的解法是(ln k^2)/k^2 < (K^2-1)/k^2=1-1/k^2<1-(1/k-1/1+k)
后面不赘述!