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x=1-sqrt(1-7.2973525693E-03^2) ; y=2*1.097373156816E+07/7.2973525693E-03^2*2.99792458E+08*(x/(1+5.44617021487E-04)+x^2*5.44617021487E-04/2/(1+5.44617021487E-04)^3)-3.2880868571276E15
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