bn xem có giúp gì được ko nha!
http://toantieuhoclh.violet.vn/entry/show/entry_id/10236071
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Các câu hỏi tương tự
1/1*2*3*4+1/2*3*4*5+....+1/2013*2014*2015*2016
x-1/2016+x-2/2015+x-3/2014=x-4/2013+x-5/2012+x-6/2011
\(Cho\) \(S=1-\dfrac{1}{2}+\dfrac{1}{3}-\dfrac{1}{4}+\dfrac{1}{5}-...+\dfrac{1}{2013}-\dfrac{1}{2014}+\dfrac{1}{2015}\)
\(B=\dfrac{1}{1008}+\dfrac{1}{1009}+\dfrac{1}{1010}+...+\dfrac{1}{2014}+\dfrac{1}{2015}\)
Tính (S - B)2016
Tìm x: \(\frac{x+4}{2013}+\frac{x+3}{2014}=\frac{x+2}{2015}+\frac{x+1}{2016}\)
Tìm x , biết ;
\(\dfrac{x+1}{2016}+\dfrac{x+2}{2015}=\dfrac{x+3}{2014}+\dfrac{x+4}{2013}\)
Cho \(A=\frac{1}{2}+\frac{1}{3}+\frac{1}{4}+...+\frac{1}{2017}\); \(B=\frac{1}{2016}+\frac{2}{2015}+\frac{3}{2014}+...+\frac{2015}{2}+\frac{2016}{1}\)
Tính \(\frac{A}{B}\)
tim x
a)x-5/x-3 >0
b)x+8/x-9<0
c) (x+1)/2017 +(x+2)/2016 +(x+3)/2015 +(x+4)/2014 +4=0
Tính tổng B = 3 - 32 + 33 - 34 + ... +32013 - 32014 + 32015 - 32016
Tìm x biết
\(\left(\dfrac{1}{2}+\dfrac{1}{3}+...+\dfrac{1}{2015}+\dfrac{1}{2016}\right)x=\dfrac{2015}{1}+\dfrac{2014}{2}+...+\dfrac{2}{2014}+\dfrac{1}{2015}\)