(-1*1/2)+(-1/2*1/3)+(-1/3*1/4).(-1/2012*1/2013)
来源:学生作业帮助网 编辑:六六作业网 时间:2024/10/06 11:48:01
(-1*1/2)+(-1/2*1/3)+(-1/3*1/4).(-1/2012*1/2013)(-1*1/2)+(-1/2*1/3)+(-1/3*1/4).(-1/2012*1/2013)(-1*1/
(-1*1/2)+(-1/2*1/3)+(-1/3*1/4).(-1/2012*1/2013)
(-1*1/2)+(-1/2*1/3)+(-1/3*1/4).(-1/2012*1/2013)
(-1*1/2)+(-1/2*1/3)+(-1/3*1/4).(-1/2012*1/2013)
原式=(1/2-1)+(1/3-1/2)+(1/4-1/3)+.(1/2013-1/2012)=1/2013-1=-2012/2013
(1-1/2^2)(1-1/3^2)K(1-1/10^2)
(1-1/2^2)(1-1/3^2)K(1-1/10^2)
(1/2+1/3+...+1/2004)(1+1/2+1/3+...+1/2003)-(1+1/2+1/3+...+1/2004)(1/2+1/3+...+1/2003)
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)
(1/2014-1)(1/2013-1)(1-2012-1)...(1/3-1)(1/2-1)
2000*(1-1/2*)*(1-1/3)*...*(1-1999)*(1-1/2000)
巧算(奥数题)问:(1+1/2)×(1-1/2)×(1+1/3)×(1-1/3)×...(1+1/99)×(1-1/99)
(1/1+2)+(1/1+2+3)+…+(1/1+2+3…+2000)
计算:(-1)-[1-(1-1/2*1/3)]*6
计算!(-1)-[1-(1-1/2*1/3)]*6
(1/2+1/3+...+1/2007)*(1+1/2+1/3+...+1/2006)-(1+1/2+1/3+...+/2007)*(1/2+1/3+...+1/2006)
(1+1/2)*(1-1/2)*(1+1/3)*(1-1/3)*...(1+1/2006)*(1-1/2006)怎么简算呀?
(1+1/2)*(1-1/2)*(1+1/3)*(1-1/3)*……*(1+1/99)*(1-1/99)
(1+1/2)×(1-1/2)×(1+1/3)×(1-1/3)×...×(1+1/99)×(1-1/99)=?
(1+1/2)×(1-1/2)×(1+1/3)×(1-1/3)×……×(1+1/99)×(1-1/99)=
(1+1/2)*(1-1/2)*(1+1/3)*(1-1/3)*.(1+1/9)*(1-1/9)
(1+1/2)(1-1/2)(1+1/3)(1-1/3)……(1+1/99)(1-1/99)