用简便方法求值:(1-1/2²)(1-1/3²)(1-1/4²)...(1-1/99²)(1-1/100²)

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用简便方法求值:(1-1/2²)(1-1/3²)(1-1/4²)...(1-1/99²)(1-1/100²)
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用简便方法求值:(1-1/2²)(1-1/3²)(1-1/4²)...(1-1/99²)(1-1/100²)
用简便方法求值:(1-1/2²)(1-1/3²)(1-1/4²)...(1-1/99²)(1-1/100²)

用简便方法求值:(1-1/2²)(1-1/3²)(1-1/4²)...(1-1/99²)(1-1/100²)
原式=1*3/2^2* 2*4/3^2*..* 99*101/100^2
=101/(2*100)
=101/200