A = \(\frac{1}{1}\)- \(\frac{1}{2}\)+ \(\frac{1}{2}\)- \(\frac{1}{3}\)+ \(\frac{1}{3}\)- \(\frac{1}{4}\)
A = 1 - \(\frac{1}{4}\)
A = \(\frac{3}{4}\)
A = 2 + 3/2 + 4/3
A = 2/1 + 3/2 + 4/3
A = 12 / 6 + 9 / 6 + 8 / 6
A = 12/6 + ( 9/6 + 8/6 )
A = 12/6 + 17/6
A = 29/6
A = 1/2 + 1/6 + 1/12
A = 6/12 + 2/12 + 1/12
A = 9/12
A = 3/4
~ Hok ~
\(A=\frac{1}{1}\times2+\frac{1}{2}\times3+\frac{1}{3}\times4\)
\(A=2+\frac{3}{2}+\frac{4}{3}\)
\(A=\frac{7}{2}+\frac{4}{3}\)
\(A=\frac{29}{6}\)
2 bạn : the pie và team math is hard làm sai nhé !
\(A=\frac{1}{1\times2}\)\(+\frac{1}{2\times3}\)\(+\frac{1}{3\times4}\)
\(A=1-\frac{1}{2}\)\(+\frac{1}{2}\)\(-\frac{1}{3}\)\(+\frac{1}{3}\)\(-\frac{1}{4}\)
\(A=1-\frac{1}{4}\)
\(A=\frac{3}{4}\)
* Cái 1/1 mình chuyển thành 1 nha *
#Ninh Nguyễn
