（1+0.0435）^0.5-1
    [（1+0.0435）0.5-1]
    1017×[（1+0.0435）^1-1]
    asin(1/0.75)
    asin(1/1.5)
    tan(2*arctan1/2)
    tan(2arctan1/2)
    tan0
    0/tan0
    e^0.02
    114^0.5
    10*7.278*0.888+959.066*0.888
    2^0
    6.457*17*0.888+1332.28*0.888
    4^-2
    270/14
    27/14*10
    [400(212*73-54*61)(212*73-54*61)]/(266*134*273*127)
    [105*(29*14-47*15)(29*14-47*15)]/(76*29*44*61)
    log（4，8）

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