x-80000×50^2×(36.52×10^(-3））^2÷24÷x^2=83.59-80000×50^2×(36.52×10^(-3)）^2÷24÷83.59^2-17.8×10^(-6)×80000×25
    x-80000×100^2×(36.52×10^(-3））^2÷24÷x^2=83.59-80000×100^2×(36.52×10^(-3)）^2÷24÷83.59^2-17.8×10^(-6)×80000×25
    43.85^2*590/3.4*(11-2*x)/(11-x)+0.9*36*(165*2*3.1416*30^2/3.4*x*43.85^2/60.35^2+165*2*3.1416*20^2/3.4*(11-x)*60.35^2/43.85^2)/(75*590/3.4*11/(11-x)/60.35^2+71*165*2*3.1416*30^2/3.4*x^2/60.35^4+71*2*3.1416*20^2/3.4*(11-x)^2/43.85^4) = 0
    43.85^2*620/3.4*(11-2*x)/(11-x)+0.9*36*(165*2*3.14*30^2/3.4*x*43.85^2/60.35^2+165*2*3.14*20^2/3.4*(11-x)*60.35^2/43.85^2)/(75*620/3.4*11/(11-x)/60.35^2+71*165*2*3.14*30^2/3.4*x^2/60.35^4+71*2*3.14*20^2/3.4*(11-x)^2/43.85^4) = 0
    43.85^2*610/3.4*(11-2*x)/(11-x)+0.9*36*(165*2*3.14*30^2/3.4*x*43.85^2/60.35^2+165*2*3.14*20^2/3.4*(11-x)*60.35^2/43.85^2)/(75*610/3.4*11/(11-x)/60.35^2+71*165*2*3.14*30^2/3.4*x^2/60.35^4+71*2*3.14*20^2/3.4*(11-x)^2/43.85^4) = 0
    60.35^2*540/3.4*(9.2-2*x)/(9.2-x)+0.9*36*(165*2*3.14*25^2/3.4*x*60.35^2/43.85^2+165*2*3.14*25^2/3.4*(9.2-x)*43.85^2/60.35^2)/(75*540/3.4*9.2/(9.2-x)/43.85^2+71*165*2*3.14*25^2/3.4*x^2/43.85^4+71*2*3.14*25^2/3.4*(9.2-x)^2/60.35^4) = 0
    60.35^2*560/3.4*(9.2-2*x)/(9.2-x)+0.9*36*(165*2*3.14*25^2/3.4*x*60.35^2/43.85^2+165*2*3.14*25^2/3.4*(9.2-x)*43.85^2/60.35^2)/(75*560/3.4*9.2/(9.2-x)/43.85^2+71*165*2*3.14*25^2/3.4*x^2/43.85^4+71*2*3.14*25^2/3.4*(9.2-x)^2/60.35^4) = 0
    60.35^2*550/3.4*(9.2-2*x)/(9.2-x)+1.0*36*(165*2*3.14*25^2/3.4*x*60.35^2/43.85^2+165*2*3.14*25^2/3.4*(9.2-x)*43.85^2/60.35^2)/(75*550/3.4*9.2/(9.2-x)/43.85^2+71*165*2*3.14*25^2/3.4*x^2/43.85^4+71*2*3.14*25^2/3.4*(9.2-x)^2/60.35^4) = 0
    43.85^2*590/3.4*(11-2*x)/(11-x)+0.9*36*(165*2*3.14*30^2/3.4*x*43.85^2/60.35^2+165*2*3.14*20^2/3.4*(11-x)*60.35^2/43.85^2)/(75*590/3.4*11/(11-x)/60.35^2+71*165*2*3.14*30^2/3.4*x^2/60.35^4+71*2*3.14*20^2/3.4*(11-x)^2/43.85^4) = 0
    43.85^2*600/3.4*(11-2*x)/(11-x)+0.9*36*(165*2*3.14*30^2/3.4*x*43.85^2/60.35^2+165*2*3.14*20^2/3.4*(11-x)*60.35^2/43.85^2)/(75*600/3.4*11/(11-x)/60.35^2+71*165*2*3.14*30^2/3.4*x^2/60.35^4+71*2*3.14*20^2/3.4*(11-x)^2/43.85^4) = 0
    （5.98-5.98/1.13*0.13+0.13）/6.89=X
    （7.13-7.17/1.13*0.13+0.15）/6.89=X
    43.85^2*700/3.4*(11-2*x)/(11-x)+0.9*36*(165*2*3.14*30^2/3.4*x*43.85^2/60.35^2+165*2*3.14*20^2/3.4*(11-x)*60.35^2/43.85^2)/(75*700/3.4*11/(11-x)/60.35^2+71*165*2*3.14*30^2/3.4*x^2/60.35^4+71*2*3.14*20^2/3.4*(11-x)^2/43.85^4) = 0
    43.85^2*580/3.4*(11-2*x)/(11-x)+0.9*36*(165*2*3.14*30^2/3.4*x*43.85^2/60.35^2+165*2*3.14*20^2/3.4*(11-x)*60.35^2/43.85^2)/(75*580/3.4*11/(11-x)/60.35^2+71*165*2*3.14*30^2/3.4*x^2/60.35^4+71*2*3.14*20^2/3.4*(11-x)^2/43.85^4) = 0
    43.85^2*400/3.4*(11-2*x)/(11-x)+0.9*36*(165*2*3.14*30^2/3.4*x*43.85^2/60.35^2+165*2*3.14*20^2/3.4*(11-x)*60.35^2/43.85^2)/(75*400/3.4*11/(11-x)/60.35^2+71*165*2*3.14*30^2/3.4*x^2/60.35^4+71*2*3.14*20^2/3.4*(11-x)^2/43.85^4) = 0
    43.85^2*510/3.4*(11-2*x)/(11-x)+0.9*36*(165*2*3.14*30^2/3.4*x*43.85^2/60.35^2+165*2*3.14*20^2/3.4*(11-x)*60.35^2/43.85^2)/(75*510/3.4*11/(11-x)/60.35^2+71*165*2*3.14*30^2/3.4*x^2/60.35^4+71*2*3.14*20^2/3.4*(11-x)^2/43.85^4) = 0
    43.85^2*530/3.4*(11-2*x)/(11-x)+0.9*36*(165*2*3.14*30^2/3.4*x*43.85^2/60.35^2+165*2*3.14*20^2/3.4*(11-x)*60.35^2/43.85^2)/(75*530/3.4*11/(11-x)/60.35^2+71*165*2*3.14*30^2/3.4*x^2/60.35^4+71*2*3.14*20^2/3.4*(11-x)^2/43.85^4) = 0
    43.85^2*550/3.4*(11-2*x)/(11-x)+0.9*36*(165*2*3.14*30^2/3.4*x*43.85^2/60.35^2+165*2*3.14*20^2/3.4*(11-x)*60.35^2/43.85^2)/(75*550/3.4*11/(11-x)/60.35^2+71*165*2*3.14*30^2/3.4*x^2/60.35^4+71*2*3.14*20^2/3.4*(11-x)^2/43.85^4) = 0
    43.85^2*500/3.4*(11-2*x)/(11-x)+0.9*36*(165*2*3.14*30^2/3.4*x*43.85^2/60.35^2+165*2*3.14*20^2/3.4*(11-x)*60.35^2/43.85^2)/(75*500/3.4*11/(11-x)/60.35^2+71*165*2*3.14*30^2/3.4*x^2/60.35^4+71*2*3.14*20^2/3.4*(11-x)^2/43.85^4) = 0
    43.85^2*600/3.4*(11-2*x)/(11-x)+0.9*36*(165*2*3.14*30^2/3.4*x*43.85^2/60.35^2+165*2*3.14*20^2/3.4*(11-x)*60.35^2/43.85^2)/(75*800/3.4*11/(11-x)/60.35^2+71*165*2*3.14*30^2/3.4*x^2/60.35^4+71*2*3.14*20^2/3.4*(11-x)^2/43.85^4) = 0

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