(1+2)/1+(2+3)/1+(3+4)/1+(4+5)/1……(9+10)/1简便!多关注一下,我可能还要追问.(1x2)/1+(2x3)/1+(3x4)/1+(4x5)/1……(9x10)/1
来源:学生作业帮助网 编辑:作业帮 时间:2024/08/12 16:35:52
![(1+2)/1+(2+3)/1+(3+4)/1+(4+5)/1……(9+10)/1简便!多关注一下,我可能还要追问.(1x2)/1+(2x3)/1+(3x4)/1+(4x5)/1……(9x10)/1](/uploads/image/z/2736770-50-0.jpg?t=%281%2B2%29%2F1%2B%282%2B3%29%2F1%2B%283%2B4%29%2F1%2B%284%2B5%29%2F1%E2%80%A6%E2%80%A6%289%2B10%29%2F1%E7%AE%80%E4%BE%BF%21%E5%A4%9A%E5%85%B3%E6%B3%A8%E4%B8%80%E4%B8%8B%2C%E6%88%91%E5%8F%AF%E8%83%BD%E8%BF%98%E8%A6%81%E8%BF%BD%E9%97%AE.%281x2%29%2F1%2B%282x3%29%2F1%2B%283x4%29%2F1%2B%284x5%29%2F1%E2%80%A6%E2%80%A6%289x10%29%2F1)
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(1+2)/1+(2+3)/1+(3+4)/1+(4+5)/1……(9+10)/1简便!多关注一下,我可能还要追问.(1x2)/1+(2x3)/1+(3x4)/1+(4x5)/1……(9x10)/1
(1+2)/1+(2+3)/1+(3+4)/1+(4+5)/1……(9+10)/1
简便!多关注一下,我可能还要追问.
(1x2)/1+(2x3)/1+(3x4)/1+(4x5)/1……(9x10)/1
(1+2)/1+(2+3)/1+(3+4)/1+(4+5)/1……(9+10)/1简便!多关注一下,我可能还要追问.(1x2)/1+(2x3)/1+(3x4)/1+(4x5)/1……(9x10)/1
(1+2)/1+(2+3)/1+(3+4)/1+(4+5)/1……(9+10)/1
=1+2*(2+3+4+……+9)+10
=1+2*(2+9)*8/2+10
=99
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