4=w*sqrt(4w^2+1)
    90+arctan(0.97*0.24)-arctan(0.1*0.24)-arcatn(0.01*0.24)-arcatn(17.16*0.24)
    sqrt((0.97x)^2+1)=xsqrt((0.001x)^2+1)*sqrt((0.1x)^2+1)*sqrt((17.16x)^2+1)
    5.11*0.057*x=5
    100x=5.11*sqrt((0.01*5.11)^2+1)*sqrt((0.1*5.11)^2+1)
    90-arctan(0.01x)-arctan(0.1x)=60
    100=x*sqrt((0.01x)^2+1)*sqrt((0.1x)^2+1)
    5*sqrt((11.3x)^2+1)=x*sqrt(x^2+1)*sqrt((0.25x)^2+1)*sqrt((118.3x)^2+1)
    5=0.44*0.096*x
    5x/(0.44*sqrt(0.44^2+1)*sqrt((0.25*0.44)^2+1))=1
    90-arctanx-arctan(0.25*x)=60
    5=x*sqrt(x^2+1)*sqrt((0.25x)^2+1)
    16/(w*sqrt(w^2+1))=1/sqrt(13.9)
    x（x+20）=160
    16*sqrt((0.47w)^2+1)=w*sqrt(1+w^2)*sqrt((0.034w)^2+1)
    16sqrt((0.47w)^2+1)=w*sqrt(1+w^2)*sqrt((0.34w)^2+1)
    arc(cos0.8)
    arc0.8
    6×x/5＋5×sqrt(4-x^2)/8=0
    2/3*((1-1/0.06)+(3/4+1/0.06)*(1/3*205.68/x*0.35805183739485175)^0.06)=5.432352941/x

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