(1-1/2²)(1-1/3²)×……×(1-1/2011²)(1-1/2012²)要有过程和理由解释.
(1-1/2²)(1-1/3²)×……×(1-1/2011²)(1-1/2012²)要有过程和理由解释.
有满意答案会额外给50分.
有满意答案会额外给50分.
数学人气:541 ℃时间:2020-04-13 06:46:22
优质解答
(1-1/2²)(1-1/3²)×……×(1-1/2011²)(1-1/2012²)=(1+1/2)(1-1/2)(1+1/3)(1-1/3)x...x(1+1/2011)(1-1/2011)(1+1/2012)(1-1/2012)=3/2x1/2x4/3x2/3x...2012/2011x2010/2011x2013...
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