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〖1/1算式〗
    作业：求算式 2/3*14.3*785.398*0.5*(sin(0.13*3.1415926))^3/3.1415926+300*4.825*0.425*(sin(0.13*3.1415926)+sin(0.99*3.1415926))/3.1415926 的值.
    题型：数学计算
    解:
          2/3*14.3*785.398*0.5*(sin(0.13*3.1415926))^3/3.1415926+300*4.825*0.425*(sin(0.13*3.1415926)+sin(0.99*3.1415926))/3.1415926
        =2/3*14.3*785.398*0.5*(sin0.408407)^3/3.1415926+300*4.825*0.425*(sin(0.13*3.1415926)+sin(0.99*3.1415926))/3.1415926
        =2/3*14.3*785.398*0.5*0.397148^3/3.1415926+300*4.825*0.425*(sin(0.13*3.1415926)+sin(0.99*3.1415926))/3.1415926
        =2/3*14.3*785.398*0.5*0.397148^3/3.1415926+300*4.825*0.425*(sin0.408407+sin(0.99*3.1415926))/3.1415926
        =2/3*14.3*785.398*0.5*0.397148^3/3.1415926+300*4.825*0.425*(sin0.408407+sin3.110177)/3.1415926
        =2/3*14.3*785.398*0.5*0.397148^3/3.1415926+300*4.825*0.425*0.428558/3.1415926
        =2/3*14.3*785.398*0.5*0.062640777486906/3.1415926+300*4.825*0.425*0.428558/3.1415926
        =0.666667*14.3*785.398*0.5*0.062640777486906/3.1415926+300*4.825*0.425*0.428558/3.1415926
        =9.533338*785.398*0.5*0.062640777486906/3.1415926+300*4.825*0.425*0.428558/3.1415926
        =7487.464599*0.5*0.062640777486906/3.1415926+300*4.825*0.425*0.428558/3.1415926
        =3743.732299*0.062640777486906/3.1415926+300*4.825*0.425*0.428558/3.1415926
        =234.510302/3.1415926+300*4.825*0.425*0.428558/3.1415926
        =74.646949+300*4.825*0.425*0.428558/3.1415926
        =74.646949+1447.5*0.425*0.428558/3.1415926
        =74.646949+615.1875*0.428558/3.1415926
        =74.646949+263.643525/3.1415926
        =74.646949+83.920342
        =158.567291
    答案:2/3*14.3*785.398*0.5*(sin(0.13*3.1415926))^3/3.1415926+300*4.825*0.425*(sin(0.13*3.1415926)+sin(0.99*3.1415926))/3.1415926=158.567291
    注：弧度制

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