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RownanieFriedmana
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---++ Numeryczne rozwiazanie rownania Friedmana Program niestabilny !!!!<BR> proba numerycznego rozwiazania rownania Friedmana (dominacja pylu %$\rho=\rho_0/a^3$%): %MATHMODE{(\frac{da}{dt})=\frac{8\pi }{3}\frac{1}{a}-k}% przy zalozeniach G=1 q0=1;<BR> problem z pierwiastkiem przy k>0 <BR> zielony kolor rozwiazanie scisle dla k>0 <BR> %MATHMODE{a(\theta)=\frac{4\pi}{3k}(1-cos(\theta))}% %MATHMODE{t(\theta)=\frac{4\pi}{3k^{3/2}}(\theta-sin(\theta))}% mozliwosc ustalenia<BR> k- krzywizna<BR> dt - krok<BR> y0, t0 - warunki poczatkowe<BR> <A HREF="http://adjani.astro.uni.torun.pl/~czarny/Applet1.html">Java Applet</A>
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Topic revision: r1 - 10 Jun 2005,
AndrzejCzarny
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