so sánh A=1/5 +1/13+1/14+1/15+1/61+1/62+1/63 va F = 1004/2006
cho M=1/5+1/13+1/14+1/15+1/61+1/62+1/63. Hãy so sánh M với 1/2
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
so sánh D với 1 phần 2:
D=\(\frac{1}{5}+\frac{1}{13}+\frac{1}{14}+\frac{1}{15}+\frac{1}{61}+\frac{1}{62}+\frac{1}{63}\)
CMR: 1/5 + 1/13 +1/14 +1/15 +1/61 +1/62 + 1/63 < 1/2
chứng minh rằng s=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
CM: 1/5+1/13+1/14+1/15+1/16+1/61+1/62+1/63<1/2
chứng minh 1/5+1/13+1/14+1/15+1/61+1/62+1/63 < 1/2