1+1/4+1/9+1/16+1/25+1/36+...的和
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1+1/4+1/9+1/16+1/25+1/36+...的和1+1/4+1/9+1/16+1/25+1/36+...的和1+1/4+1/9+1/16+1/25+1/36+...的和1/1*1+1/2*
1+1/4+1/9+1/16+1/25+1/36+...的和
1+1/4+1/9+1/16+1/25+1/36+...的和
1+1/4+1/9+1/16+1/25+1/36+...的和
1/1*1+1/2*2+1/3*3+1/4*4+1/5*5+1/6*6+...
1+1/2*1/2+1/3*1/3+...
答:1/n(n+1)*2n+1/6*2
(1-1/4)(1-1/9)(1-1/16)(1-1/25)...(1-1/10000)
速度(1-1/4)×(1-1/9)×(1-1/16)×(1-1/25)×.×(1-1/10000)
(1-1/4)*(1-1/9)*(1-1/16)*(1-1/25)*(1-1/36)*(1-1/49)如何计算
(1-1/4)(1-1/9)(1-1/16)(1-1/25)(1-1/36)(1-1/49)=?
按规侓填数:1/4,4/9,( ),16/25,( ).
(1-1/4)(1-1/9)(1-1/16)(1-1/25)(1-1/36)(1-1/49)(1-1/64)(1-1/81)(1-1/100)
(1-1/4)(1-1/9)(1-1/16)(1-1/25)(1-1/36)(1-1/49)(1-1/64)(1-1/81)(1-1/100)
1,4,9,16,25,( ),( ),64,81
1,4,9,16,25,36,49,( )
1,4,9,16,25?64,81
1,4,9,16,25的规律
1,4,9,16,25,( ),49
1 4 9 16 25 () 49
1 4 9 16 25 ()规律
(1-4分之1)(1-9分之1)(1-16分之1)(1-25分之1).(1-100分之1)
(1-1/4)(1-1/9)(1-1/16)(1-1/25).(1-1/100)
1+1/4+1/9+1/16+1/25+1/36+...的和
用简便方法计算 (1-1/4)(1-1/9)(1-16)(1-1/25)...(1-1/10000)