1/2+1/4+1/8+1/16+······+1/512要方法
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1/2+1/4+1/8+1/16+······+1/512要方法
1/2+1/4+1/8+1/16+······+1/512
要方法
1/2+1/4+1/8+1/16+······+1/512要方法
=1/2 + 1/4 + 1/8 + 1/16 + . + 1/256 + 1/512 + 1/512 - 1/512
=1/2 + 1/4 + 1/8 + 1/16 + . + 1/256 + 1/256 - 1/512
=.
=1/2 + 1/2 - 1/512
=1 - 1/512
=511/512
-128,64,-32,16,-8,4,-2,1,-½,···第n个数是急需···················
1/2+1/4+1/8+1/16+······+1/512要方法
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
1+2+4+8+16+32+·····+1024=?简便计算
1/2+1/4+1/8+1/16+········+1/256(简便计算)
1/2+1/4+1/8+1/16+········+1/256(简便计算)
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+1/2)(1+1/2)^2(1+1/2)^4(1+1/2)^8(1+1/2)^16+(1/2)^31具体过程····
1 2 3 4 ·····7 ·······10 ········?1 3 5 7 ·····?······?··········290 1 4 9 ·····?······?··········?
已知数列1*1/2,2*1/4,3*1/8,4*1/16,···,n*1/2^n,···,求sn
把自然数从1开始,排列成下表:1 2 4 7 11 16······ 3 5 8 12 17······ 6 9 13 18·····把自然数从1开始,排列成下表:1 2 4 7 11 16······3 5 8 12 17······6 9 13 18······10 14 19······15 20··
1/2+1/4+1/8+1/16+1/32+1/64+1/128······等于几?
求和:-1,2,-4,8,-16,32······512的和是多少?
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1,2,4,8,16····,则第2011个数是几
数学题解答1/2+1/4+1/8+1/16+······+1/5121/2+1/4+1/8+1/16+······+1/512 要方法 利用发现的规律简便计算 1/2+1/4=3/4 1/2+1/4+|1/8=7/8
初中数学题d有一列数,按一定规律排列 --1 2 --4 8 --16 32··············那么第2013个数是——______________.
1、1、2、3、5、8、13、()、()、55······1、4、9、16、()、()、49······