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We study the equation of state at high redshift $~= 10^{17}$, following the prescription outlined by Saini et al. [1]. Extending this prescription to high redshift, we obtain in recombination z=1000 and in the early matter-dominated era which lies between last-scattering surface z=1100 and the equality of radiation-matter z=3000, omega is $~= -0.14$. For $0 <= z <= 7.34 $and $29 <= z <= 10^7$, we find -1640 $<= \omega <= 0$. At redshift $7.35 <= z <= 29$, we obtain $0 <= \omega <= 335$ and for $z >= 10^7$, $\omega$ possesses disorderly oscillations so that $ \omega = 0.14$ at nucleosynthesis $z = 10^{10}$. At redshift $7.34 <= z <= 7.35$, $\omega$ behaves asymptotically.
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