50000=（100-V)*1800-50000
    0.8x＾2-1.8×3＾0.5x-1=0
    x^3+3x-3=0
    x+16=1.5x
    x
    1625.6+1625.6*0.03+0.03*x+(1625.6+1625.6*0.03+0.03*X)*0.0475*2/2+(1625.6+1625.6*0.03+0.03*x+(1625.6+1625.6*0.03+0.03*X)*0.0475*2/2)*0.2+0.0524*x=x
    X+16=1.5x
    1625.6+1625.6*0.03+0.03*x+(1625.6+1625.6*0.03+0.03*X)*0.0475*2/2+(1625.6+1625.6*0.03+0.03*x+(1625.6+1625.6*0.03+0.03*X)*0.0475*2/2)*0.2=x
    1625.6+1625.6*0.03+0.03*x+(1625.6+1625.6*0.03+0.03*X)*0.0475*2/2+(1625.6+1625.6*0.03+0.03*x+(1625.6+1625.6*0.03+0.03*X)*0.0475*2/2)*0.2
    X+16.2=1.6x
    X+16=1.5x
    X+16=1.5x
    x＾(-10000)*(lnx)＾2=-0.001
    1625.6+48.77+0.03*X+(1625.60+1625.60*0.03+0.03*X)*0.0475*2/2+(1625.60+1625.60*0.03+0.03*X+(1625.60+1625.60*0.03+0.03*X)*0.0475*2/2)*0.2+0.0524*X=x
    1625.6+48.77+0.03*X+(1460.50+1460.50*0.03+0.03*X)*0.0475*2/2+(1460.50+1460.50*0.03+0.03*X+(1460.50+1460.50*0.03+0.03*X)*0.0475*2/2)*0.1+0.0524*X=X
    (8505+115+X)*（5.36938%+1.5%）*1/4=X
    arctanx+arctan0.1x-90
    X=1625.6+1625.6*0.03+0.03*X+(1625.6+1625.6*0.03+0.03*X)*0.0475*2/2+(1625.6+1625.6*0.03+0.03*X+(1625.6+1625.6*0.03+0.03*X)*0.0475*2/2)*0.2+0.0524*X
    arcsec-2
    1625.6+1625.6*0.03+0.03*X+(1625.6+1625.6*0.03+0.03*X)*0.0475*2/2+(1625.6+1625.6*0.03+0.03*X+(1625.6+1625.6*0.03+0.03*X)*0.0475*2/2)*0.2+0.0524*X

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