2020/2017 : 1/2 + 6/2017 : 1/2 + 1/2017 :1/2
= 2020/2017 × 2 + 6/2017 × 2 + 1/2017 ×2
= 2 × (2020/2017 + 6/2017 + 1/2017)
= 2 × 2017/2017`
= 2×1
= 2
2010/2017 : 1/2 + 6/2017 : 1/2 + 1/2017
giải và ghi dõ hộ mình nhé
cho a = 1/2*2+1/3*3+1/4*4+....+1/2017*2017
so sanh a voi 1
Bài 1 : Sắp xếp
5/4, 1/4, 1/23/50, 1/5, 4/5, 2006/2005, 2016/2017, 1/20, 3/55, 2017/2016, 3/58, 3/31, 1/12, 1/6, 3/5, 2/3, 3/52, 3/4, 1/15
(2/3 + 3/4 + 4/5 + .........+ 2016 /2017 ) x ( 1/2 + 2/3 + 3/4 + ......+ 2015 /2016) - ( 1/2 + 2/3 + 3/4 + ........2016 /2017 ) x 2/3 + 3/4 + 4/5 + .....+ 2015/2016)
Tính: (2/3 + 3/4 + 4/5 + ... + 2016/2017) x (1/2 + 2/3 + 3/4 + ... + 2015/2016) – (1/2 + 2/3 + 3/4 + ... + 2016/2017) x (2/3 + 3/4 + 4/5 + ... + 2015/2016).
(2/3 +3/4 +4/5+...+ 2016/2017) x ( 1/2+ 2/3+ 3/4+... + 2015/2016) - ( 1/2 + 2/3+ 3/4+ .... +2016/2017) x ( 2/3+ 3/4+ 4/5+... + 2015/2016) = ?
Giải chi tiết giúp mình nhé,
1/2 x 2/3 x 3/4 x 4/5 x ... x 2016/2017 x 2017/2018
cac ban lam ho minh nhe
Tính: (2/3 + 3/4 + 4/5 + ... + 2016/2017) x (1/2 + 2/3 + 3/4 + ... + 2015/2016) – (1/2 + 2/3 + 3/4 + ... + 2016/2017) x (2/3 + 3/4 + 4/5 + ... + 2015/2016).
Thông cảm, mình không viết được phân số.
đề này hơi dài và hơi khó :
(2/3 + 3/4 + 4/5 + ... + 2016/2017) x (1/2 + 2/3 + 3/4 + ... + 2015/2016) - (1/2 + 2/3 + 3/4 +...+ 2016/2017) x (2/3 + 3/4 +4/5 + ... + 2015/2016) = ???
mong mn giải hộ -(ToT)- huhuhuhu
