LÊ TRẦN BÁCH
Giới thiệu về bản thân
-_-
0
0
0
0
0
0
0
2023-12-19 20:30:13
2
2023-12-19 20:30:10
2
2023-12-19 20:30:08
2
2023-12-19 20:30:03
2
2023-12-19 20:30:00
2
2023-11-24 20:31:08
=(-30)+(-8)+21
=(-38)+21
=-17
2023-11-23 20:47:44
trường hợp p>1 thì sao?
2023-10-11 21:46:59
\(S=2^{2018}-1\)
2023-10-11 21:43:23
\(S=1+2+2^2+2^3+...+2^{2017}\)
\(2S=2+2^2+2^3+2^4+...+2^{2017}+2^{2018}\)
\(2S-S=2+2^2+2^3+2^4+...+2^{2017}+2^{2018}-1+2+2^2+2^3+...+2^{2017}\)
\(S=\dfrac{2^{2018}-1}{2}\)
2022-02-11 20:04:32