Tính C biết : C = ( 1 + $\frac{1}{1.3}$ )(1 + $\frac{1}{2.4}$ )(1+$\frac{1}{3.5}$ )…..(1+$\frac{1}{2014.2016}$ ) 03/07/2021 Bởi Aaliyah Tính C biết : C = ( 1 + $\frac{1}{1.3}$ )(1 + $\frac{1}{2.4}$ )(1+$\frac{1}{3.5}$ )…..(1+$\frac{1}{2014.2016}$ )
$\text{C = (1 + $\frac{1}{1.3}$ )( 1 + $\frac{1}{2.4}$ )( 1 + $\frac{1}{3.5}$ )….( 1 + $\frac{1}{2014.2016}$ )}$ $\text{C = $\frac{4}{1.3}$ . $\frac{9}{2.4}$ . $\frac{16}{3.5}$ ….. $\frac{4060225}{2014.2016}$ }$ $\text{C = $\frac{2.2}{1.3}$ . $\frac{3.3}{2.4}$ . $\frac{4.4}{3.5}$ ….. $\frac{2015.2015}{2014.2016}$ }$ $\text{C = $\frac{2.2.3.3.4.4…..2015.2015}{1.3.2.4.3.5…..2014.2016}$ }$ $\text{C = $\frac{2}{2016}$ }$ $\text{C = $\frac{2 : 2}{2016 : 2}$ }$ $\text{C = $\frac{1}{1008}$ }$ $\text{⇒ C = $\frac{1}{1008}$ }$$\text{Chúc em học tốt ^^}$$\text{( Mong Admin đừng Xóa )}$ Bình luận
Đáp án: C=2 Giải thích các bước: C=2016.( 1 + 1/1.3 )(1 + 1/2.4 )(1+1/3.5 )…..(1+1/2014.2016 ) =2016.(4/1.3).(9/2..4).(16/3.5)….(4060225/1014.2016) =2016.(2.2/1.3).(3.3/2.4).(4.4/3.5)….(2015.2015/2014.2016) =2016.(2.3.4….2015/2.3.4…2015).(2.3.4…2015/3.4.5…2016) =2016.(1.2/2016) =2016.(1/1008) =2 Vậy C=2 vote cho mk nha mất t/g của mk lắm đó Bình luận
$\text{C = (1 + $\frac{1}{1.3}$ )( 1 + $\frac{1}{2.4}$ )( 1 + $\frac{1}{3.5}$ )….( 1 + $\frac{1}{2014.2016}$ )}$
$\text{C = $\frac{4}{1.3}$ . $\frac{9}{2.4}$ . $\frac{16}{3.5}$ ….. $\frac{4060225}{2014.2016}$ }$
$\text{C = $\frac{2.2}{1.3}$ . $\frac{3.3}{2.4}$ . $\frac{4.4}{3.5}$ ….. $\frac{2015.2015}{2014.2016}$ }$
$\text{C = $\frac{2.2.3.3.4.4…..2015.2015}{1.3.2.4.3.5…..2014.2016}$ }$
$\text{C = $\frac{2}{2016}$ }$
$\text{C = $\frac{2 : 2}{2016 : 2}$ }$
$\text{C = $\frac{1}{1008}$ }$
$\text{⇒ C = $\frac{1}{1008}$ }$
$\text{Chúc em học tốt ^^}$
$\text{( Mong Admin đừng Xóa )}$
Đáp án:
C=2
Giải thích các bước:
C=2016.( 1 + 1/1.3 )(1 + 1/2.4 )(1+1/3.5 )…..(1+1/2014.2016 )
=2016.(4/1.3).(9/2..4).(16/3.5)….(4060225/1014.2016)
=2016.(2.2/1.3).(3.3/2.4).(4.4/3.5)….(2015.2015/2014.2016)
=2016.(2.3.4….2015/2.3.4…2015).(2.3.4…2015/3.4.5…2016)
=2016.(1.2/2016)
=2016.(1/1008)
=2
Vậy C=2
vote cho mk nha mất t/g của mk lắm đó