Các câu hỏi tương tự
A = 1/51 +1/52 + 1/53 + ... + 1/100
B = 1/1.2 + 1/3.4 + 1/4.5 + ... + 1/99.100
CMR A : B = 1
Làm mà t thấy hợp lí cho tick
tinh: ( 1/52+ 1/51+ 1/53 + ...+ 1/100) : ( 1/1.2 + 1/3.4 + 1/5.6 + .... + 1/99.100 )
tinh: ( 1/52+ 1/51+ 1/53 + ...+ 1/100) : ( 1/1.2 + 1/3.4 + 1/5.6 + .... + 1/99.100 )
tính tỉ số A+1/51+1/52+...+1/100,B= 1/1.2+1/3.4+..+1/99.100
a. A=1/51+1/52+1/53+...+1/100; B=1/1.2+1/3.4+...+1/99.100
CHỨNG MINH:1/1.2+1/3.4+1/5.6+1/7.8+.......+1/99.100=1/51+1/52+1/53+......+1/100
A=1/1.2+1/3.4+1/5.6+....+1/97.98+1/99.100 B=1/50+1/51+1/52+....+1/99+1/100 Tính A-B
Cho A = 1/51 + 1/52+ 1/53 +...+ 1/100
B = 1/1.2 + 1/3.4 +1/5.6+...+ 1/99.100
A/ B = ?
tính B:C biết
B=1/51+1/52+1/53+...+1/100
C= 1/1.2+1/3.4+1/5.6+...+1/99.100