Các câu hỏi tương tự
Bài 1: CMR 3/1^2*2^2 + 5/2^2*3^2 + 7/3^2*4^2 + ....... + 19/9^2*10^2 bé hơn 1
Bài 2: CMR 1/3 + 2/3^2 Bài 1: CMR 3/1^2*2^2 + 5/2^2*3^2 + 7/3^2*4^2 + ....... + 19/9^2*10^2 bé hơn 3/4
Bài 3: Cho A= 1/1*2 + 1/3*4 + 1/5*6 + .... + 1/99*100. CMR 7/12 < A < 5/6
CMR 1/2+1/2^2+...+1/2^100<1
CMR:1/2^2+1/4^2+1/6^2+1/8^2+....+1/2022^2<1/2
Cmr (2+1) (2^2+1) (2^4+1)...(2^1024+1)=1+2+2^2+...+2^2047
CMR:1/2^2+1/3^2+...+1/n^2<1
cmr 1/2^2+1/2^3+....+1/2^n<1
Cmr:1+1/2^2+1/3^2+.....+1/n^2 <2
CMR:1-1/2^2-1/3^2-......-1/2011^2>1/2011
cmr: 1-1/2-1/2^2-...-1/2^10 > 1/2^11
CMR: 1/2^2+1/3^2+1/4^2+...+1/n^2<1