1/3+1/15+1/35+···1/4040099等于?用简便方法计算。原来的算式是、1/3*1+1/3*5+1/5*7+``````+1/2009*2011的值。

1/3+1/15+1/35+······+1/9999和是多少? 1 2 3 4 ·····7 ·······10 ········?1 3 5 7 ·····?······?··········290 1 4 9 ·····?······?··········? 计算：3/1+8/1+15/1+·······+360/1 1+2+3+4+······+78+79+801/2+1/6+1/12+1/20+······+1/72+1/90100-99+98-97+96-······+4-3+2-11000-1-2-3-4-······-78-79-801/15+2/15+······+13/15+14/15注：例 1/15 就是 十五分之一 计算1/（1*4）+1/（4*7）+1/（7*10)+------+1/(97*100)································································································ 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 3/1+15/1+35/1+63/1···+（2N+1)(2N+3)/1+···+8099/1 1+2+3+4+5+6+7+8+9+1+11+12+13+14+15````````1+2+3+4+5+6+7+8+9+1+11+12+13+14+15+16+17+18+19+20+21+22+23+24+25+26+27+28++29+30+31+32+33+34+35+36+37+38+39+40+41+42+43+44+45+46+47+48+49+50·································· 2011红领巾快乐数独答案一2·····4·9·631·4·8·8··97··3··3··2·95···95·86···15·3··7··9··47··5·7·3·182·3·4·····7二7·1·8·3·····413·6·2·6···4·8·8·5·1·2·61·····94·2·9·4·7·8· 这几道奥数题谁会,求2014在哪一行那一列 1 2 3 4 5 10 9 8 7 6 11 12 13 14 15 20 19 18 17 16 求2014哪一行那一列 1 2 3 4 5 6 7 8 9 ···· ····· ·························· 急·····················1+2+3+...+999=? 证明1·3·5·····(2n-1)/2·4·6·····2n 3分之1+15分之1+35分之1+······+2007*2009分之1+2009*2011分之1简算 数列 1/2,3/2,1/3 ,4/3,·········1/n+1,n+2/n+1,·········是否有极限? 1/3+1/15+1/35+1/63+···1/9999=?1/3等于 三分之一 1=5,2=15,3=215,4=4125··········问5=? 2[4/3y—（2/3y—1/2）]=3/4y急·································!1 1+1/2+1/3+1/4+1/5+1/6+······+1/15+1/16求和的整数部分