1*y-(1*y/1.13*0.13-1*50)*1.1-950=0
    416.74+0+12.50+0.01V+18.40+0.0002V+22.38+0.0005V+0.0529V=V
    arctan(0.5x)+arctan(0.15x) = 35
    arctan(0.5x)+arctan(0.15x)=90
    X²＋2x＝1/3
    sinx-2x=1.6-2π
    xln(x/3028)＝0.5259
    x=5+6-x
    xln(x/11088)＝0.5
    xln(x/11088)＝0.5
    xlnx＝9.81
    X² +4 X +79等于1300
    x^2/（1-x）=0.99793
    100x∧2+5189.4x＝40567940
    x²-70x＝15675
    0.08x2+0.9x=99
    x^3=-9*sinx
    x^3=sinx
    2(x²+4)＝5x
    2(x²+4)＝5x

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