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)](/uploads/image/z/745106-50-6.jpg?t=%E7%94%A8%E7%AE%80%E4%BE%BF%E6%96%B9%E6%B3%95%E6%B1%82%E5%80%BC%EF%BC%9A%EF%BC%881-1%2F2%26%23178%3B%EF%BC%89%EF%BC%881-1%2F3%26%23178%3B%EF%BC%89%EF%BC%881-1%2F4%26%23178%3B%EF%BC%89...%281-1%2F99%26%23178%3B%29%EF%BC%881-1%2F100%26%23178%3B%EF%BC%89)
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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