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数学
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1、(21+1)×(22+1)×(24+1)×(28+1)×(216+1)×(232+1)×(264+1)的值
不好意思,上面的都是以2为底的数幂.2的一次方,2的2次方,2的4次方,依次类推,一直到2的64次方.
人气:244 ℃ 时间:2020-02-02 20:56:03
解答
乘以(2-1)
(2-1)(2+1)(2^2+1)(2^4+1)(2^8+1)(2^16+1)(2^32+1)(2^64+1)
=(2^2-1)(2^2+1)(2^4+1)(2^8+1)(2^16+1)(2^32+1)(2^64+1)
=(2^4-1)(2^4+1)(2^8+1)(2^16+1)(2^32+1)(2^64+1)
=(2^8-1)(2^8+1)(2^16+1)(2^32+1)(2^64+1)
……
以此类推,最后得到
(2^64-1)(2^64+1)=2^128-1
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3(22+1)(24+1)(28+1)…(232+1)+1的个位数是( ) A.4 B.5 C.6 D.8
计算(2+1)(22+1)(24+1)(28+1)(216+1)(232+1)+1
(2+1) (22+1) (24+1) (28+1) (216+1) (232+1)+1
(2+1)(22+1)( 24+1)( 28+1)( 216+1)( 232+1)( 264+1)+1
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