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Các câu hỏi tương tự
cho A=3+3^2+3^3+3^4+.....+3^100
dag can gap lam
A=1/2^2 +1/3^2+1/4^2+...+1/100^2 và B=1/4^2+1/6^2+1/8^2+...+1/200^2. Tính A/B
giup dum minh like cho gap lam roi
Cmr 1/3+2/3^+3/3^3+.................+100/3^100<3/4
CMR:
1/3 + 2/3^2 + 3/3^3 + 4/3^4 +...+ 100/3^100 < 3/4
cmr 1/3+2/3^2+•••+100/3^100 < 3/4
CMR:(1/2! +2/3! +3/4! + ......+99/100! )<1.giup minh nhe roi minh tick sau
Ai giúp mình bài này vs : CMR: 1/3 + 2/3^2 + 3/3^3 + 4/3^4...+100/3^100 < 3/4?
Cho C = \(\frac{1}{3}+\frac{1}{3^2}+\frac{1}{3^3}+...+\frac{1}{3^{99}}\)chứng minh rằng C < \(\frac{1}{2}\)CMR : \(\frac{3}{1^2.2^2}+\frac{5}{2^2.3^2}+\frac{7}{3^2.4^2}+...+\frac{19}{9^2.10^2}< 1\)CMR : \(\frac{1}{3}+\frac{2}{3^2}+\frac{3}{3^3}+\frac{4}{3^4}+...+\frac{100}{3^{100}}< \frac{3}{4}\)
Xem chi tiết
\(CMR:\\\frac{1}{3}+\frac{2}{3^2}+\frac{3}{3^3}+...+\frac{100}{3^{100}}< \frac{3}{4}\)