S=1/5=(1/13+1/14+1/15)+(1/61+1/62+1/63)
suy ra S<1/5+1/12x3+1/60x3
S<1/5+1/4+1/20
=>S<1/2
S=1/5=(1/13+1/14+1/15)+(1/61+1/62+1/63)
suy ra S<1/5+1/12x3+1/60x3
S<1/5+1/4+1/20
=>S<1/2
Chứng minh rằng ; S = 1/5+1/13+1/14+1/15+1/61+1/62+1/63 < 1/2
ai nhanh nhất mình sẽ tick cho đấy
CMR : S = 1/5+1/13+1/14+1/15+1/61+1/62+1/63 < 1/2
minh thach ai lam duoc bai nay
cho \(A=\frac{1}{5}+\frac{1}{13}+\frac{1}{14}+\frac{1}{15}+\frac{1}{60}+\frac{1}{61}+\frac{1}{62}+\frac{1}{63}\)\(\frac{1}{63}\)
chứng minh \(A< \frac{1}{2}\)
ai làm nhanh,đúng sẽ được 1 like
CHO S = 1/5 + 1/13 +1/14 +1/15 +1/61 +1/62 +1/63. HÃY SO SÁNH S VÀ 1/2
GIÚP MIH`, MIH` TICK NHA
s= 1/5+1/13+1/14+1/15+1/61+1/62+1/63.CMR:3/7<S<1/2
CMR : \(\frac{1}{5}+\frac{1}{14}+\frac{1}{27}+\frac{1}{43}+\frac{1}{61}+\frac{1}{89}+\frac{1}{111}<\frac{1}{2}\)
THÁCH AI LÀM ĐƯỢC BÀI NÀY ! HA HA
CMR: 1/5 + 1/13 +1/14 +1/15 +1/61 +1/62 + 1/63 < 1/2
CMR : 1/3+1/5+1/13+1/14+1/15+1/61+1/62+1/63<5/6
chứng minh rằng s=1/5+1/13+1/14+1/15+1/61+1/62+1/63<1/2