1+(1/2-1)+(1/4-1/3)+(1/5-1/4)+……+(1/2009-1/2008)+(1/2010+1/2009) 简便计算啊
来源:学生作业帮助网 编辑:六六作业网 时间:2024/12/28 04:04:01
1+(1/2-1)+(1/4-1/3)+(1/5-1/4)+……+(1/2009-1/2008)+(1/2010+1/2009)简便计算啊1+(1/2-1)+(1/4-1/3)+(1/5-1/4)+…
1+(1/2-1)+(1/4-1/3)+(1/5-1/4)+……+(1/2009-1/2008)+(1/2010+1/2009) 简便计算啊
1+(1/2-1)+(1/4-1/3)+(1/5-1/4)+……+(1/2009-1/2008)+(1/2010+1/2009) 简便计算啊
1+(1/2-1)+(1/4-1/3)+(1/5-1/4)+……+(1/2009-1/2008)+(1/2010+1/2009) 简便计算啊
1+(1/2-1)+(1/4-1/3)+(1/5-1/4)+……+(1/2009-1/2008)+(1/2010+1/2009)
=1-1+1/2-1/2+1/3+……+1/2008-1/2009+1/2009+1/2010
=1/2010
200*(1-1/2)*(1-1/3)*(1-1/4)*.*(1-1/100)
(1-2/1)*(1-3/1)*(1-4/1)*.*(1-2007/1)*(1-2008/1)
(1-1/2)(1-1/3)(1-1/4).(1-1/100)
(1+2/1)(1+4/1)(1+6/1).(1+10/)(1-3/1)(1—5/1).(1-9/1)
计算 ( 1+1/2)*(1-1/3)*(1+1/4)*(1-1/5)*.*(1+1/1000)*(1-1/1001)
1.(1+1/2+1/3+1/4)*(1/2+1/3+1/4+1/5)-(1+1/2+1/3+1/4+1/5)*(1/2+1/3+1/4)=2.(1+1/2+1/3+1/4+1/5)*(1/2+1/3+1/4+1/5+1/6)-(1+1/2+1/3+1/4+1/5+1/6)*(1/2+1/3+1/4+1/5)=
(-1×1/2)+(-1/2×1/3)+(-1/3×1/4)+…+(-1/2008×1/2009)
(-1*1/2)+(-1/2*1/3)+(-1/3*1/4).(-1/2012*1/2013)
(1-1/2)×(1-1/3)×(1-1/4)……×(1-1/2008)计算方法
(-1/2)-(-1/3)-(+1/4)
(1/2+1/3+1/4+1/5+1/6+.+1/2013)*(1+1/2+..+1/2012)-(1+1/2+1/3+1/4+...+1/2013)*(1/2+.+1/2012)(1/2+1/3+1/4+1/5+1/6+...+1/2013)*(1+1/2+1/3+1/4...+1/2012)-(1+1/2+1/3+1/4+...+1/2013)*(1/2+1/3+1/4+...+1/2012)
(1+1/2+1/3+1/4)×(1/2+1/3+1/4+1/5)-(1+1/2+1/3+1/4+1/5)×(1/2+1/3+1/4)~
(1+1/2+1/3+1/4)乘以(1/2+1/3+1/4+1/5)-(1+1/2+1/3+1/4+1/5)乘以(1/2+1/3+1/4)简算
(1/2+1/3+1/4+1/6)*24
计算:(1/50-1)(1/49-1)(1/48-1)…(1/4-1)(1/3-1)(1/2-1)
(1-1/100)(1-1/99)(1-1/98)...(1-1/4)(1-1/3)(1-1/2)求和
(1/100-1)(1/99-1)(1/98-1).(1/4-1)(1/3-1)(1/2-1)等于多少?
100/1-1)(99/1-1)(98/1-1)…(4/1-1)(3/1-1)(2分之1-1)