bang gi ong cung chiu vi ong hoc lop 5
Các câu hỏi tương tự
CMR:1/7^2-1/7^4+...+1/74n-2-1/74n+...+1/798-1/7100<1/50
cm: 1/72-1/74+...+1/74n-1-1/74n+...+1/798-1/7100<1/50
Chứng minh rằng : \(\frac{1}{7^2}-\frac{1}{7^4}+...+\frac{1}{7^{4n-2}}-\frac{1}{7^{4n}}+...+\frac{1}{7^{98}}-\frac{1}{7^{100}}< \frac{1}{50}\)
CMR : \(\frac{1}{7^2}-\frac{1}{7^4}+...+\frac{1}{7^{4n-2}}-\frac{1}{7^n}+...+\frac{1}{7^{98}}+\frac{1}{7^{100}}< \frac{1}{50}\)
Giải hộ mình nhé
Chứng minh \(\frac{1}{7^2}-\frac{1}{74}+...+\frac{1}{7^{4n-2}}-\frac{1}{7^{4n}}+...+\frac{1}{7^{98}}-\frac{1}{7^{100}}<\frac{1}{50}\)
Chứng minh:
\(\frac{1}{7^2}-\frac{1}{7^4}+...+\frac{1}{4n-2}+\frac{1}{4n}+...+\frac{1}{98}+\frac{1}{100}<\frac{1}{50}\)
CMR: 1/7^2-1/7^4+1/7^6-...+1/7^98-1/7^100 < 1/50
cho \(A=\frac{1}{7^2}-\frac{1}{7^4}+....+\frac{1}{7^{4n-2}}-\frac{1}{7^{4n}}+....+\)\(\frac{1}{7^{100}}\)
Chứng minh rằng :
\(\frac{1}{7^2}\)- \(\frac{1}{7^4}\)+........+ \(\frac{1}{7^{4n-2}}\)- \(\frac{1}{7^{4n}}\) +.......+\(\frac{1}{7^{98}}\)- \(\frac{1}{7^{100}}\)< \(\frac{1}{50}\)