S=1/2+1/2^2+1/2^3+...+1/2^20
2S=1+1/2+1/2^2+....+1/2^19
=>2S-S=(1+1/2+1/2^2+...+1/2^19)-(1/2+1/2^2+1/2^3+...+1/2^20)
S=1-1/2^20<1
=>S<1
Vậy S<1
S=1/2+1/2^2+1/2^3+...+1/2^20
2S=1+1/2+1/2^2+....+1/2^19
=>2S-S=(1+1/2+1/2^2+...+1/2^19)-(1/2+1/2^2+1/2^3+...+1/2^20)
S=1-1/2^20<1
=>S<1
Vậy S<1
Chứng minh rắng S=1/2+1/22+1/23+.....+1/220<1
Chứng minh rắng: 100 - ( 1 + 1/2 + 1/3 +.....+1/100) = 1/2 + 2/3 + 3/4 +...+99/100.
Chứng minh rằng:
S=1/2+1/2^2+1/2^3+...+1/2^20<1
chứng minh rằng S = 1/2 + 1/2^2 + 1/2^3+...+1/2^20 <1
Chứng minh:
\(S=\dfrac{1}{2}+\dfrac{1}{2^2}+\dfrac{1}{2^3}+....+\dfrac{1}{2^{20}}< 1\)
chứng minh rằng : S=1/2+1/22 +1/ 23 +...1/220 <1
chứng minh rằng: S= 1/2+1/2^2+1/2^3+...+1/2^20
Giúp mik vs nha
chứng minh răng S = 1/2+1/2^2+1/2^3+.........+1/2^20<1
help vs nhanh lên nha mn!
Chứng minh;
S=1/5+1/13+1/14+1/15+1/61+1/62+1/63<1/2
S=1/2+1/2^2+1/2^3+...+1/2^20<1