Eq. (13): every solution with $0<H<1$ satisfies $2(t-t_0)=1/H-\operatorname{artanh}H$ · Prove2Me

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Initializing...

Eq. (13): every solution with $0<H<1$ satisfies $2(t-t_0)=1/H-\operatorname{artanh}H$ · Prove2Me