chứng tỏ:
\(\dfrac{1}{2^2}+\dfrac{1}{3^2}+\dfrac{1}{4^2}+-+\dfrac{1}{25^2}< 1\)
Loga
Toán lớp 6
chứng tỏ:
\(\dfrac{1}{2^2}+\dfrac{1}{3^2}+\dfrac{1}{4^2}+-+\dfrac{1}{25^2}< 1\)
