Các câu hỏi tương tự
Tính A/B biết ; A=1/2+1/3+1/4+...+1/100 B= 1/199+2/198+3/197+...+197/3+198/2+199/1
Tính A/B biết:
A=1/2 +1/3 1/4 1/5 ..... 1/200
B1/199+ 2/198+ 3/197 + ..........................+ 198/2 +199/1
1/2+1+1/2(1+2)+1/3(1+2+3)+.......+1/199(1+2+3+4+.....+199)
E=1/2+1/3+1/4+...+1/200
199/1+198/2+197/3+...+1/199
a/ Tính tổng: S = (-1/3)^0 + (-1/3)^1 + (-1/3)^2 + ... +(-1/3)^200
b/ CMR: S = 1/2! + 2/3! + 3/4! +...+ 199/200! < 1
D=\(\frac{\frac{1}{2}+\frac{1}{3}+\frac{1}{4}+...+\frac{1}{198}+\frac{1}{199}}{\frac{1}{199}+\frac{2}{198}+\frac{3}{197}+...+\frac{198}{2}+\frac{199}{1}}\)
Tính tỉ số A và B , biết rằng :
\(A=\frac{1}{2}+\frac{1}{3}+\frac{1}{4}+...+\frac{1}{200}\)
\(B=\frac{1}{199}+\frac{2}{198}+\frac{3}{197}+...+\frac{198}{2}+\frac{199}{1}\)
so sánh \(a=\frac{1}{2^2}+\frac{1}{2^3}+\frac{1}{2^4}+...+\frac{1}{199^2}với\frac{3}{4}\)
Cho:
A=1/2+1/3+1/4+...+1/200
B = 1/199+2/198+3/197+...+ 197/3+198/2+199/1
Tinh A/B
Bai nay kho nen cac ban giai giup minh nha minh tich dung cho