C=1^2+2^2+3^2+...+100^2=?
PLEASE!!! HELP ME
chung minh rang 1-1/2^2-1/3^3-1/4^2-....-1/100^2>1/100
please,who can help me?
Tim so du khi A=1+2+2^2+...+2^100 cho 35
Please help me
So du cua A=1+2+2^2+...+2^100 cho 31 la ??
Please help me
A=(1+2+2^2+2^3+2^4)+(2^5+2^6+2^7+2^8+2^9)+...........+(2^95+2^96+2^97+2^98+2^99)+2^100
A=31+2^5. 31+........+2^95. 31+2^100 (hơi nhanh tí nhé)
ta có 2^100 chia cho 31 dư mấy thì acungx chia cho 31 dư bấy nhiêu
bạn tự tính nhé
So du khi chia A=1+2+2^2+...+2^100 cho 35 la ?
Please help me
tính :
D = 1 + 4 + 4^ 2 + 4 ^ 3 + ... + 4 ^ 100
HELP ME , PLEASE
Ta có: D = 1 + 4 + 42 + 43 + .... + 4100
=> 4D = 4 + 42 + 43 + .... + 4101
=> 4D - D = 4101 - 1
=> 3D = 4101 - 1
=> D = 4101 - 1/3
help me,please!=(((
1)tính hợp lí :
a/1/5-(1/2+3/4):5/2
b/1,5.(1/3-2/3)
c/9/10.23/11-1/11.9/10+9/10
a) 1/5 - (1/2 + 3/4 ) : 5/2
= 1/5 - ( 1/4 + 3/4 ) : 5/2
=1/5 - 1 : 5/2
= 1/5 - 1 . 2/5
= 1/5 - 2/5
= -1/5
b) 1,5 . (1/3 - 2/3)
=3/2 . ( -1/3)
=-1/2
c) 9/10 . 23/11 - 1/11 . 9/10 + 9/10
= 9/10 . ( 23/11 - 1/11 ) + 9/10
= 9/10 . 1 + 9/10
= 9/10 + 9/10
= 18/10 = 9/5
1/1+2+3+1/1+2+3+4+...+1/1+2+3+...+59<2/3
Help me, please!
Tính:C=1/21/2^3+1/2^5+...+1/2^99
Help me please!
Cho A = 1/2 + 1/2^2 +1/2^3 + ... + 1/2^2016. Chứng tỏ A < 1.
Help me, please!!!!!!!!!!!!!!