Các câu hỏi tương tự
cho A = 1/199+2/198+3197+...+198/2+199/1.Chứng minh A = 200.(1/2+1/3+...+1/200)
(x-20)/1*(1/2+1/3+...+1/200)/(1/199+1/998+...+199/1
Tính tỉ số A/B biết:
A= 1/1*2+1/3*4+1/5*6+...+1/199+200
B= 1/101*200+1/102*199+...+1/200*101
Tính tỉ số A/B biết:
A= 1/1*2+1/3*4+1/5*6+...+1/199+200
B= 1/101*200+1/102*199+...+1/200*101
S = 1 . 200 + 2 . 199 + 3 . 198 + 4 . 197 + ........ + 199 . 2 + 200 .1
Cho A=1/2+1/3+1/4+...+1/199+1/200
B=1/199+2/198+3/197+...+198/2+199/1
Tính A : B
1-1/2+1/3+1/4+...+1/199+1/200=1/101+1/102+1/103+...+1/200
CMR:1/101+1/102+1/103+...+1/200=1-1/2+1/3-1/4+...+1/199-1/200
CMR: 1-1/2+1/3-1/4+...+1/199-1/200=1/101+1/102+1/103+...+1/200