总述：本次共解1题。其中
           ☆算术计算1题

〖1/1算式〗
    作业：求算式 (100/((1+12)^1))+(110/((1+12)^2))+(120/((1+12)^3))+(130/((1+12)^4))+(140/((1+12)^5)) 的值.
    题型：数学计算
    解:
          (100/((1+12)^1))+(110/((1+12)^2))+(120/((1+12)^3))+(130/((1+12)^4))+(140/((1+12)^5))
        =(100/(13^1))+(110/((1+12)^2))+(120/((1+12)^3))+(130/((1+12)^4))+(140/((1+12)^5))
        =(100/13)+(110/((1+12)^2))+(120/((1+12)^3))+(130/((1+12)^4))+(140/((1+12)^5))
        =7.692308+(110/((1+12)^2))+(120/((1+12)^3))+(130/((1+12)^4))+(140/((1+12)^5))
        =7.692308+(110/(13^2))+(120/((1+12)^3))+(130/((1+12)^4))+(140/((1+12)^5))
        =7.692308+(110/169)+(120/((1+12)^3))+(130/((1+12)^4))+(140/((1+12)^5))
        =7.692308+0.650888+(120/((1+12)^3))+(130/((1+12)^4))+(140/((1+12)^5))
        =7.692308+0.650888+(120/(13^3))+(130/((1+12)^4))+(140/((1+12)^5))
        =7.692308+0.650888+(120/2197)+(130/((1+12)^4))+(140/((1+12)^5))
        =7.692308+0.650888+0.05462+(130/((1+12)^4))+(140/((1+12)^5))
        =7.692308+0.650888+0.05462+(130/(13^4))+(140/((1+12)^5))
        =7.692308+0.650888+0.05462+(130/28561)+(140/((1+12)^5))
        =7.692308+0.650888+0.05462+0.004552+(140/((1+12)^5))
        =7.692308+0.650888+0.05462+0.004552+(140/(13^5))
        =7.692308+0.650888+0.05462+0.004552+(140/371293)
        =7.692308+0.650888+0.05462+0.004552+0.000377
        =8.343196+0.05462+0.004552+0.000377
        =8.397816+0.004552+0.000377
        =8.402368+0.000377
        =8.402745
    答案:(100/((1+12)^1))+(110/((1+12)^2))+(120/((1+12)^3))+(130/((1+12)^4))+(140/((1+12)^5))=8.402745

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