Các câu hỏi tương tự
Cho 2 phan so a/b va c/d (a,b,c,d€z,b,d be hon 0)
a) Chung minh rang a/b be hon c/d va nguoc lai.
b) Ap dung ket qua tren de so sanh cac phan so sau:
11/13 va 22/27; -5/11 va -9/37; -7/15 va -19/29
so sanh phan so -22/45 va -51/103
so sanh phan so 11/105;-8/-25
So sanh phan so 1313/9191va1111/7373
Chung minh rang
A=1/12+1/13+.....+1/22>1/2
B=1/10+1/11+.....+1/99+1/100>1
C=1/5+1/6+1/7+....+1/17<2
D=3/10+3/11+3/12+3/13+3/14
Hoi d co la so tu nhien ko
Cam on cac ban rat nhieu
so sanh phan so sau:1/13^17 va 1/5^11
so sanh phan so a.-22/35 va -105 / 177
b. (3/8)5 va (5/243)3
Cho hai phan so A=20/39 + 22/37 + 18/43 va B=14/39 + 22/29 + 18/41. So sanh A va B.
Ai nhanh nhat va dung nhat thi minh se tick va ket ban nhe!!!
cho 2 phan so 4/4 va 6/7 tu 2 phan so da cho lap 1 phan so thu ba bang cach ;tu so la tong cac tu so cua 2 phan so da cho ,mau so la tong cac mau so da cho.Hay so sanh ba phan so do voi nhau va xep chung theo thu tu tang dan
Tim so nguyen x , biet : 1 phan 6 = x phan 18 ; x phan 8 = -1 phan 4 ; 4 phan -5 = x phan 10 ; 11 phan 5 = -22 phan x ; x phan 8 = 8 phan x ; x phan -11 = -11 phan x