\(A=\frac{1+2+...+2014}{2015}\)
\(A=\frac{\frac{2014\cdot2015}{2}}{2015}\)
\(A=\frac{1007\cdot2015}{2015}\)
\(A=1007\)
\(A=\frac{1+2+...+2014}{2015}\)
\(A=\frac{\frac{2014\cdot2015}{2}}{2015}\)
\(A=\frac{1007\cdot2015}{2015}\)
\(A=1007\)
Tính tổng :
\(\frac{1}{2015}+\frac{2}{2015}+\frac{3}{2015}+...+\frac{2014}{2015}\)
Tìm x biết : \(\left(1+\frac{1}{2}+\frac{1}{3}+...+\frac{1}{2011}+\frac{1}{2012}\right)\times503x=1+\frac{2014}{2}+\frac{2015}{3}\)
tìm x ( x>0)
\(\frac{2015}{2014}+\frac{1}{x}=\frac{1}{x+1}+\frac{2014}{2013}\)
\(\frac{1}{n}+\frac{2015}{2014}+\frac{2014}{2013}+\frac{1}{n+1}\)
\(\frac{1}{2}\)x \(\frac{2}{3}\) x \(\frac{3}{4}\) x \(\frac{5}{6}\) x ...........x \(\frac{2013}{2014}\)x \(\frac{2014}{2015}\)x \(\frac{2015}{2016}\)
mong các bạn hãy giải giúp mình nha ai đúng và nhanh nhất dược minh cho 7 k
So sánh 2 phân số sau:\(\frac{2014}{2015}.......\frac{2000}{2001}\)
So sánh 2 phân số sau: \(\frac{2014}{2015}.....\frac{2000}{2001}\)
Tính \(A=\frac{1}{2016}+\frac{3}{2016}+\frac{5}{2016}+...+\frac{2015}{2016}\)
so sanh phan so bang cach hop li
a) \(\frac{2013}{2014}\) va \(\frac{2014}{2015}\)
b)\(\frac{44}{135}va\frac{81}{241}\)