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\(\left(-1\frac{1}{3}\right).\left(-1\frac{1}{4}\right).\left(-1\frac{1}{5}\right)....\left(-1\frac{1}{2012}\right)=\frac{-2}{3}.\frac{-3}{4}.....\frac{-2011}{2012}=\frac{2}{2012}=\frac{1}{1006}\)
hình như có chỗ nhầm:
\(=\frac{-4}{3}\cdot\frac{-5}{4}\cdot\frac{-6}{5}\cdot...\cdot\frac{-2013}{2012}\)
\(\left(-1\dfrac{1}{3}\right)\left(-1\dfrac{1}{4}\right)\left(-1\dfrac{1}{5}\right)...\left(-1\dfrac{1}{2012}\right)\)
\(=\dfrac{-4}{3}.\dfrac{-5}{4}.\dfrac{-6}{5}...\dfrac{-2013}{2012}\)
=\(\dfrac{2013}{3}\)
= 671
Kho..................wa.....................troi.....................thi......................lanh.................ret.......................ai........................tich..........................ung.....................ho........................minh.....................cho....................do....................lanh
\(\left(-1\frac{1}{3}\right).\left(-1\frac{1}{4}\right).\left(-1\frac{1}{5}\right)...\left(-1\frac{1}{2012}\right)\)
= \(-\frac{2}{3}.\frac{-3}{4}.\frac{-4}{5}...\frac{-2011}{2012}\)
= \(\frac{\left(-2\right).\left(-3\right).\left(-4\right)...\left(-2011\right)}{3.4.5...2012}\)
= \(\frac{2.3.4....2011}{3.4.5..2012}\)
= \(\frac{2}{2012}\)
= \(\frac{1}{1006}\)