( 1 + 2 ^ -1/8 )( 1 + 2 ^ -1/4 )( 1 + 2 ^ -1/2 )
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( 1 + 2 ^ -1/8 )( 1 + 2 ^ -1/4 )( 1 + 2 ^ -1/2 )
求简便方法!
求简便方法!
( 1 + 2 ^ -1/8 )( 1 + 2 ^ -1/4 )( 1 + 2 ^ -1/2 )
=(1 - 2^-1/8)( 1 + 2 ^ -1/8)( 1 + 2 ^ -1/4 )( 1 + 2^-1/2)/(1 - 2^-1/8) 分子分母同乘以一个1 - 2^-1/8
= (1-2^-1/4)( 1 + 2 ^ -1/4 )( 1 + 2^-1/2)/(1 - 2^-1/8)
=(1-2^-1/2)( 1 + 2^-1/2)/(1 - 2^-1/8)
=(1-2^-1)/(1 - 2^-1/8)
=1/2 / (1 - 2^-1/8)
=自己化简吧~
=(1 - 2^-1/8)( 1 + 2 ^ -1/8)( 1 + 2 ^ -1/4 )( 1 + 2^-1/2)/(1 - 2^-1/8) 分子分母同乘以一个1 - 2^-1/8
= (1-2^-1/4)( 1 + 2 ^ -1/4 )( 1 + 2^-1/2)/(1 - 2^-1/8)
=(1-2^-1/2)( 1 + 2^-1/2)/(1 - 2^-1/8)
=(1-2^-1)/(1 - 2^-1/8)
=1/2 / (1 - 2^-1/8)
=自己化简吧~
(1-1/2^2)(1-1/3^2)(1-1/4^2)(1-1/5^2)(1-1/6^2)(1\1/7^2)(1-1/8
(1+1/2)(1+1/2^2)(1+1/2^4)(1+1/2^8)+1/2^15=?
(1+1/2)(1+1/2^2)(1+1/2^4)(1+1/2^8)+1/2^15
(2+1)(2^2+1)(2^4+1)(2^8+1)(2^16+1)(2^32+1)+1计算方法是什么?
数学题;1-1/2-1/4-1/8-...-1/128
1/2+1/4+1/8+1/16+...+1/1024
1/2+1/4+1/8+1/16+1/32+.
1/1×2+1/1-1/2:;1/2×4=1/2×(1/2-1/4);1/58×=1/3(×1/5-1/8)
计算(1+2)(1+2²)(1+2^4)(1+2^8)(1+2^16)
1/2,1/4,
计算:(1+1/2^32)(1+1/2^16)(1+1/6^8)(1+1/2^4)(1+1/2^2)(1+1/2) .
(2+1)(2²+1)(2^4+1)(2^8+1)(2^16+1)(2^32+1)+1=