(15.0197*cosX+5.92943716)^2+(15.0197*sinX-19.5700512)^2=20.3031^2
    X=96÷（1+20%）÷（1-20%）
    0.45-X-0.12+1=0
    (9.9972*cosX-2.05250216)^2+(9.9972*sinX+2.00511122)^2=12.5178^2
    (9.9972*cosX+8.11055565)^2+(9.9972*sinX-0.0524796918)^2=12.5178^2
    (9.9730*cosX-1.98870397)^2+(9.9730*sinX+2.31225061)^2=12.7756^2
    (101.325-10^(6.080-1345/(x+219.5)))/(10^(6.031-1211/(x+220.8))-10^(6.080-1345/(x+219.5)))=0.5
    （38.584+x）×2.35＝38.584-x+68.468
    （38.584+x）×2.5＝38.584-x+68.468
    （38.584+x）×2.65＝38.584-x+68.468
    （38.584+x）×2.8＝38.584-x+68.968
    （38.584+x）×2.65＝38.584-x+68.968
    （38.584-x）×2.65＝38.584-x+68.968
    （38.584+x）×2.5＝38.584-x+68.968
    （38.584+x）×2.35＝38.584-x+68.968
    (2x/(2x-5))-(2/(2x+5))=1
    (2x/2x-5)-(2/2x+5)=1
    -x^2/x+1=0
    -x^2-x-1=0
    x＋(x×0.468)=3.13

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