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  1. TST

    systen of differential equations

    Let a system DEqs is given:<br> d^2(s(t))/d(t)^2-k s(t) r(t) = f<br> d^2(s(t))/d(t)^2 - d^2(r(t))/d(t)^2 - p s(t) r(t) =0<br> where s=s(t) and r=r(t) are unknown functions of t,. p, k and f are diven constants. r(t) is small parameter.<br> Find the functions s(t) and r(t) in closed (analytical)...

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