我是初一的学生,下个星期就要期中考试了,我要搞懂,1 1 1 1—— + —— + ——+ ·····+ ———— 怎么算出来的,1×2 2×3 3×4 2008×20091 1 1 1—— + —— + ——+ ·····+ —— —— 等于多少?1×
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![我是初一的学生,下个星期就要期中考试了,我要搞懂,1 1 1 1—— + —— + ——+ ·····+ ———— 怎么算出来的,1×2 2×3 3×4 2008×20091 1 1 1—— + —— + ——+ ·····+ —— —— 等于多少?1×](/uploads/image/z/12074952-48-2.jpg?t=%E6%88%91%E6%98%AF%E5%88%9D%E4%B8%80%E7%9A%84%E5%AD%A6%E7%94%9F%2C%E4%B8%8B%E4%B8%AA%E6%98%9F%E6%9C%9F%E5%B0%B1%E8%A6%81%E6%9C%9F%E4%B8%AD%E8%80%83%E8%AF%95%E4%BA%86%2C%E6%88%91%E8%A6%81%E6%90%9E%E6%87%82%2C1+1+1+1%E2%80%94%E2%80%94+%2B+%E2%80%94%E2%80%94+%2B+%E2%80%94%E2%80%94%2B+%C2%B7%C2%B7%C2%B7%C2%B7%C2%B7%EF%BC%8B+%E2%80%94%E2%80%94%E2%80%94%E2%80%94+%E6%80%8E%E4%B9%88%E7%AE%97%E5%87%BA%E6%9D%A5%E7%9A%84%2C1%C3%972+2%C3%973+3%C3%974+2008%C3%9720091+1+1+1%E2%80%94%E2%80%94+%2B+%E2%80%94%E2%80%94+%2B+%E2%80%94%E2%80%94%2B+%C2%B7%C2%B7%C2%B7%C2%B7%C2%B7%EF%BC%8B+%E2%80%94%E2%80%94+%E2%80%94%E2%80%94+%E7%AD%89%E4%BA%8E%E5%A4%9A%E5%B0%91%3F1%C3%97)
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