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Chu Bất Nguyệt
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Nguyễn Hoàng Nguyên
16 tháng 4 2016 lúc 8:55

ket qua la 5435 ban nha

Cao Cẩm Ly
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Cao Cẩm Ly
12 tháng 3 2016 lúc 20:13

giúp mới mình sẽ tích

Thắng Nguyễn
12 tháng 3 2016 lúc 20:16

bn viết rõ đề đi

Cao Cẩm Ly
12 tháng 3 2016 lúc 20:16

ai nhanh nhất mình sẽ cho 3 k

vânthcsvy
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Lương Ngọc Linh
10 tháng 1 2016 lúc 19:28

5435

tích mình nha

vânthcsvy
10 tháng 1 2016 lúc 19:28

luu y : dau /la phan cach giua mau so va tu so

Không Phải Dạng Vừa Đâu
10 tháng 1 2016 lúc 19:32

5435 tich nha

 

Nguyễn Hồng Phúc
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Nguyen Huynh Dat
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Virgo Cá Tính
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Bui Thi Minh Thu
27 tháng 2 2017 lúc 14:42

Chào bạn !Mình kết bạn nha!

Hoàng Minh Hoài
27 tháng 2 2017 lúc 14:44
                                                                                                                                                                                                                                      
                                                                                                                                                                                                                                      
                                                                                                                                                                                                                                      
                                                                                                                                               
\(B=\frac{3+1}{3}+\frac{8+1}{8}+...+\frac{2014.2016+1}{2014.2016}+\frac{2015.2017+1}{2015.2017}\)         
\(=\frac{2^2}{3}+\frac{3^2}{8}+....+\frac{2015^2}{2014.2016}+\frac{2016^2}{2015.2017}\)         
=\(\frac{2.2}{3}+\frac{3.3}{2.4}+...+\frac{2015.2015}{2014.2016}+\frac{2016.2016}{2015.2017}\)         
=\(\frac{\left(2.3....2015.2016\right)+\left(2.3.....2015.2016\right)}{\left(1.2.3.....2014.2015\right)+\left(3.4....2016.2017\right)}\)         
=\(2016+\frac{2}{2017}\)         
          
          
          
          
          
          
          
          
          
          
          
                                                                                      
                                                                                                                                                                                                                                      
                                                                                                                                                                                                                                      
                                                                                                                                                                                                                                      
                                                                                                                                                                                                                                      
                                                                                                                                                                                                                                      
                                                                                                                                                                                                                                      
                                                                                                                                                                                                                                      
                                                                                                                                                                                                                                      
                                                                                                                                                                                                                                      
                                                                                                                                                                                                                                      
                                                                                                                                                                                                                                      
                                                                                                                                                                                                                                      
                                                                                                                                                                                                                                      
                                                                                                                                                                                                                                      
 
Virgo Cá Tính
4 tháng 3 2017 lúc 16:51

mấy chế ko giúp thì thôi lại còn nhấn linh tinh

Nguyen Huynh Dat
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Mới vô
26 tháng 4 2017 lúc 11:47

\(A=\frac{1}{101}+\frac{1}{102}+\frac{1}{103}+...+\frac{1}{199}+\frac{1}{200}\)

Ta thấy các phân số \(\frac{1}{101};\frac{1}{102};\frac{1}{103};...;\frac{1}{198};\frac{1}{199}\)đều lớn hơn \(\frac{1}{200}\)

\(\Rightarrow A>\frac{1}{200}+\frac{1}{200}+\frac{1}{200}+..+\frac{1}{200}+\frac{1}{200}\)(có 100 số hạng \(\frac{1}{200}\))

\(\Leftrightarrow A>\frac{100}{200}\)

\(\Leftrightarrow A>\frac{1}{2}\)

Trịnh hiếu anh
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Jeon Jung Kook
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Nguyễn Đăng Diện
10 tháng 4 2016 lúc 21:01

\(C=\left(1+\frac{1}{1.3}\right)\left(1+\frac{1}{2.4}\right)\left(1+\frac{1}{3.5}\right)...\left(1+\frac{1}{2014.2016}\right)\)

k nha

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