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〖1/1算式〗
    作业：求算式 -975000+260000/1.15+350000/((1.15)^2)+360000/((1.15)^3)+400000/((1.15)^4)+500000/((1.15)^5) 的值.
    题型：数学计算
    解:
          -975000+260000/1.15+350000/((1.15)^2)+360000/((1.15)^3)+400000/((1.15)^4)+500000/((1.15)^5)
        =-975000+260000/1.15+350000/(1.15^2)+360000/((1.15)^3)+400000/((1.15)^4)+500000/((1.15)^5)
        =-975000+260000/1.15+350000/1.3225+360000/((1.15)^3)+400000/((1.15)^4)+500000/((1.15)^5)
        =-975000+260000/1.15+350000/1.3225+360000/(1.15^3)+400000/((1.15)^4)+500000/((1.15)^5)
        =-975000+260000/1.15+350000/1.3225+360000/1.520875+400000/((1.15)^4)+500000/((1.15)^5)
        =-975000+260000/1.15+350000/1.3225+360000/1.520875+400000/(1.15^4)+500000/((1.15)^5)
        =-975000+260000/1.15+350000/1.3225+360000/1.520875+400000/1.749006249999999+500000/((1.15)^5)
        =-975000+260000/1.15+350000/1.3225+360000/1.520875+400000/1.749006249999999+500000/(1.15^5)
        =-975000+260000/1.15+350000/1.3225+360000/1.520875+400000/1.749006249999999+500000/2.011357187499999
        =-975000+226086.956522+350000/1.3225+360000/1.520875+400000/1.749006249999999+500000/2.011357187499999
        =-975000+226086.956522+264650.283554+360000/1.520875+400000/1.749006249999999+500000/2.011357187499999
        =-975000+226086.956522+264650.283554+236705.843676+400000/1.749006249999999+500000/2.011357187499999
        =-975000+226086.956522+264650.283554+236705.843676+228701.298237+500000/2.011357187499999
        =-975000+226086.956522+264650.283554+236705.843676+228701.298237+248588.367649
        =-748913.043478+264650.283554+236705.843676+228701.298237+248588.367649
        =-484262.759924+236705.843676+228701.298237+248588.367649
        =-247556.916248+228701.298237+248588.367649
        =-18855.618011+248588.367649
        =229732.749638
    答案:-975000+260000/1.15+350000/((1.15)^2)+360000/((1.15)^3)+400000/((1.15)^4)+500000/((1.15)^5)=229732.749638

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