Các câu hỏi tương tự
so sánh:
\(\frac{1}{4}+\frac{2}{4^2}+\frac{3}{4^3}+\frac{4}{4^4}+...+\frac{2015}{4^{2015}}\)với \(\frac{1}{2}\)
so sánh:
\(\frac{1}{4}+\frac{2}{4^2}+\frac{3}{4^3}+\frac{4}{4^4}+...+\frac{2015}{4^{2015}}\)với \(\frac{1}{2}\)
so sánh:
\(\frac{1}{4}+\frac{2}{4^2}+\frac{3}{4^3}+\frac{4}{4^4}+...+\frac{2015}{4^{2015}}\)với \(\frac{1}{2}\)
So sánh:
A=\(\frac{2}{4^2}+\frac{3}{4^3}+\frac{4}{4^4}+...+\frac{2015}{4^{2015}}\)với\(\frac{1}{2}\)
So sánh:
A=\(\frac{2}{4^2}+\frac{3}{4^3}+\frac{4}{4^4}+...+\frac{2015}{4^{2015}}\)với \(\frac{1}{2}\)
so sánh:
\(\frac{1}{4}+\frac{2}{4^2}+\frac{3}{4^3}+\frac{4}{4^4}+...+\frac{2015}{4^{2015}}\) với \(\frac{1}{2}\)
Nhới giải chi tiết giùm mình nhé
SO SÁNH:
A=\(\frac{\frac{2016}{1}+\frac{2015}{2}+\frac{2014}{3}+.....+\frac{2}{2015}+\frac{1}{2016}}{\frac{1}{2}+\frac{1}{3}+\frac{1}{4}+.....+\frac{1}{2016}+\frac{1}{2017}}\)
VÀ
B=2017
Cho M=\(\frac{1}{4}-\frac{2}{4^2}+\frac{3}{4^3}-\frac{4}{4^4}+...+\frac{2015}{4^{2015}}-\frac{2016}{4^{2016}}\).Chứng minh M<\(\frac{4}{25}\)
\(S=\frac{1}{4}+ \frac{2}{4_{ }^2}+\frac{3}{4^3}+\frac{4}{4^4}+...+\frac{2015}{4^{2015}}.\)Chứng minhb rằng :S < \(\frac{1}{2}\frac{ }{ }\)