1-0.1-0.01-0.001-0.0001.-0.0000000001
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1-0.1-0.01-0.001-0.0001.-0.00000000011-0.1-0.01-0.001-0.0001.-0.00000000011-0.1-0.01-0.001-0.0001.-0
1-0.1-0.01-0.001-0.0001.-0.0000000001
1-0.1-0.01-0.001-0.0001.-0.0000000001
1-0.1-0.01-0.001-0.0001.-0.0000000001
可以利用等比数列.0.1 0.01 0.001 .成等比数列
首项是0.1,公比是0.1,
观察可以得到,第n项小数点后有n位,所以0.0000000001可知n=10
所以后面的和是Sn=0.1*(1-0.1^10)/(1-0.1)=0.1111111111
.等比数列求和公式
所以原式=0.8888888889
1-0。1-0.01-0.001-0.0001。。。。。-0.0000000001
=1-0.1111111111
=0.8888888889
1-0.1-0.01-0.001-.-0.000000001
1-0.1-0.01-0.001-0.0001.-0.0000000001
1-0.1-0.01-0.001-0.0001-……-0.000000001怎么算
1减0.1减0.01减0.001减0.0001
1-0.1-0.01-0.001-.-0.000000001巧算半小时内高分!
水表*1*0.1*0.01*0.001*1000*100*10
1里有几个0.1,几个0.01,几个0.001
1里面个( )0.01( )个0.001是0.1
-40,-20,-10,1,0.1,0.01,0.01,0.001,0.0001,0.00001有什么规律
0.1/0.01*0.001/0.0001 如何简便
0.1+0.01+0.001+0.0001+.=2009/()
0.1+0.01+0.001+0.0001无限循环等于多少? 我没学过极限1-0.1-0.01-0.001循环又等于多少
0.1分之1-0.01分之1-0.001分之1-0.0001分之1
1/0.1-1/0.01-1/0.001-1/0.0001.=?怎么算?
1里面有100个()填空题:1、0.1 2、0.01 3、0.001
用数学归纳法证明0.1+0.01+0.001+.+0.1的n次方=((1-0.1的n次方)/9)
1-0.1-0.01-0.001-0.0001用简便运算怎么算急用
1÷0.1÷0.01÷0.001÷.÷0.0000001 计算