e(0.0148/(0.07+2*x))=(0.07+2*x)/0.07
    （0.07+2*x）*ln（（0.07+2*x）/0.07）=0.0148
    100=x^6+1.04x^3+x^2
    16x^2+1=4x^8+5x^6+x^4
    （26.326+x）×0.85＝52.652+71.778-x
    （26.326+x）×0.85＝52.652+72.778-x
    （26.326+x）×0.85＝52.652+73.778-x
    （26.326+x）×0.85＝52.652+74.778-x
    （26.326+x）×0.85＝52.652+75.778-x
    （26.326+x）×0.85＝52.652+76.778-x
    -(4/3)x+(25/6)=(24/7)x
    y=(3/4)*(-22/25)+6
    y=-(3/4)*(-22/25)+6
    (3/4)x+6+(4/3)x-(25/6)=0
    9.6x+9.6×40=24000
    X+X*3%=39890
    x=1.33%x+77350
    x=0.0672x+77350
    13tanx+17cosx=17.8
    x^2-8.4x+11.4=0

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