\(M=\frac{1}{1^2}+\frac{1}{2^2}+\frac{1}{3^2}+...+\frac{1}{10^2}\)
\(>1+\frac{1}{2.3}+\frac{1}{3.4}+...+\frac{1}{10.11}\)
\(=1+\frac{1}{2}-\frac{1}{3}+\frac{1}{3}-\frac{1}{4}+...+\frac{1}{10}-\frac{1}{11}\)
\(=1+\frac{1}{2}-\frac{1}{11}\)
\(>1+\frac{1}{2}-\frac{1}{6}=\frac{4}{3}\)
cho M= 1/12+1/22+1/32+....+1/102. hay so sanh M voi 1^1/3
Cho M=\(\frac{1}{1^2}+\frac{1}{2^2}+\frac{1}{3^2}+...+\frac{1}{10^2}\).Hay so sanh M voi \(1\frac{1}{3}\)
M==1+1/2+1/2^2+1/2^3+....+1/2^2016
So sanh M voi 2
hay so sanh m voi 1
M=\(\frac{1}{2!}+\frac{2}{3!}++......+\frac{9}{10!}\)
Cho S=1+3^2+3^4+3^6+.......+3^98+3^100.
So sanh 8S+1 voi 2^152
Tim so du cua S khi chia cho 10.
Cho M=1+1/2+1/2^2+...+1/2^2015+1/2^2016. so sanh M voi 2
\(M=\frac{1}{2}-\frac{1}{2^4}+\frac{1}{2^7}-\frac{1}{2^{10}}+......+\frac{1}{2^{\text{49}}}-\frac{1}{2^{52}}\)
so sanh m voi 9/4
nhờ giải đầy đủ nha ai làm đc mình tick cho\
cho A = (1/2^2-1)(1/3^2-1)(1/4^2-1)...(1/100^2-1). so sanh voi -1/2
M=4^0+4^1+4^2+4^3+....+4^23
So Sanh 3M+1 voi 63^7
