arccos-0.074439
    (2*(-0.0097903096)*33-2*(-0.39657121))*ln33+2*0.0097903096*33+3*(-0.39657121)
    (2*(-0.0097903096)*5-2*(-0.39657121))*ln5+2*0.0097903096*5+3*(-0.39657121)
    (2*(-0.0097903096)*3-2*(-0.39657121))*ln3+2*0.0097903096*3+3*(-0.39657121)
    arccos-0.046814
    arccos-0.068178
    arccos0.395628
    arccos0.389367
    3*e3-7*e2+4
    -1.0773639*2/1+1.3800438*e^(-1)
    0.78549551-0.0097903096*(ln(12.140836))^2-0.39657121/(12.140836)*ln(12.140836)
    0.78549551-0.0097903096*(ln(12.140836))^2-0.39657121/(312.140836)*ln(12.140836)
    0.78549551-0.0097903096*(ln(3.303143))^2-0.39657121/(3.303143)*ln(3.303143)
    1.0773639/100-1.3800438*e^(-10)
    (2*（-0.0097903096）*15+0.39657121)*ln(15)-0.39657121
    (2*（-0.0097903096）*4+0.39657121)*ln(4)-0.39657121
    (2*（-0.0097903096）*2+0.39657121)*ln(2)-0.39657121
    1－5×2/15
    1695.23*9.5+2981.09*3.1+114.67*24.5+381.38*19.5-1.25（1605.47*14.23+1916.93*3.2）
    904.24*8.17+407.67*2.14-114.67*15.18-381.38*10.18-813.35*1.81

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