(100+99-98-97+···+4+3-2-1)*(2012*2013-1)分之(2012+2011*2013)(2012+2011*2013)(100+99-98-97+···+4+3-2-1)*(2012*2013-1)*-----------------------------(2012*2013-1)(2012+2011*2013)-------------------------------(2012*2013-1)
来源:学生作业帮助网 编辑:作业帮 时间:2024/08/30 05:46:14
(100+99-98-97+···+4+3-2-1)*(2012*2013-1)分之(2012+2011*2013)(2012+2011*2013)(100+99-98-97+···+4+3-2-1)*(2012*2013-1)*-----------------------------(2012*2013-1)(2012+2011*2013)-------------------------------(2012*2013-1)
(100+99-98-97+···+4+3-2-1)*(2012*2013-1)分之(2012+2011*2013)
(2012+2011*2013)
(100+99-98-97+···+4+3-2-1)*(2012*2013-1)*-----------------------------
(2012*2013-1)
(2012+2011*2013)
-------------------------------
(2012*2013-1)
(100+99-98-97+···+4+3-2-1)*(2012*2013-1)分之(2012+2011*2013)(2012+2011*2013)(100+99-98-97+···+4+3-2-1)*(2012*2013-1)*-----------------------------(2012*2013-1)(2012+2011*2013)-------------------------------(2012*2013-1)
看不懂是什么,是不是这2个?
是的话我继续往下解.
巧算:100+99-98-97+96+95-·····+4+3-2-1
100+99-98-97+96+95+·······+4+3-2-1怎么做?
100-99+98-97+96-95+······+12-11+10=?
数学奥林匹克1-2+3-4+5-6+···+97-98+99+100=?
观察下列三角形数表其中从第二行起每行的每一个数为其肩膀上两树之和则该表的最后一个数是?1 2 3 4 5 6 7 8················ 97 98 99 100 3 5 7··························
8+11+14+17+20+·······+305 数学计算题.呜呜呜1+2+3+4+···················+98+99+100+99+98+···············+3+2+1
计算100-99+98-97+··+6-5+4-3+2-1=?
100·100-99·99+98·98-97·97+96·96-95·95+····+2·2-1·1的解题过程?
100²-99²+98²-97²+······+2²-1²=( )
100²-99²+98²-97²+96²-······-1² 怎么算
计算100²-99²+98²-97²+96²+··········+2²-1的值
计算题:1+2+(-3)+(-4)+5+6+(-7)+(-8)+···97+98+(-99)+(-100)怎么做?
1+2-3+4+5-6······+97+98-99的解题方法是巧算快
100+99-98+97-96+···+3-2+1=()要简便计算
1+3+5+···45+47+49+50+51+53+55+···+95+97+99-2-4-6-···-96-98-100=
1+2+3+······+95+96+97+98+99=?
计算1/(1*4)+1/(4*7)+1/(7*10)+------+1/(97*100)································································································
帮忙算一道题 简便算法··100-99+98-97+96-...+4-3+2-1拜托啦