1.(1-1/11^2)*(1-1/12^2)*……*(1-1/99^2)2.比较大小:1/2*3/4*5/6*7/8*……*63/64与1/83.比较大小:2/3*4/5*6/7*8/9*……*126/127与1/11
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![1.(1-1/11^2)*(1-1/12^2)*……*(1-1/99^2)2.比较大小:1/2*3/4*5/6*7/8*……*63/64与1/83.比较大小:2/3*4/5*6/7*8/9*……*126/127与1/11](/uploads/image/z/1719887-23-7.jpg?t=1.%281-1%2F11%5E2%29%2A%281-1%2F12%5E2%29%2A%E2%80%A6%E2%80%A6%2A%281-1%2F99%5E2%292.%E6%AF%94%E8%BE%83%E5%A4%A7%E5%B0%8F%EF%BC%9A1%2F2%2A3%2F4%2A5%2F6%2A7%2F8%2A%E2%80%A6%E2%80%A6%2A63%2F64%E4%B8%8E1%2F83.%E6%AF%94%E8%BE%83%E5%A4%A7%E5%B0%8F%EF%BC%9A2%2F3%2A4%2F5%2A6%2F7%2A8%2F9%2A%E2%80%A6%E2%80%A6%2A126%2F127%E4%B8%8E1%2F11)
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