Inspiral-frequency ratio: f(t_c/2)/f(0) = 2^(3/8)

Sympy-exact witness of the inspiral-frequency halving-time ratio. Setup: f(t) ∝ (t_c − t)^(-3/8) — the quadrupole-radiation-back-reaction power-law. Identity: ratio at t=t_c/2 relative to t=0 is ((t_c-0)/(t_c-t_c/2))^(3/8) =…