Figure 13

(a) \(\theta \left( \zeta \right)\) for various \(D < 0.\) (b) \(\theta_{p} \left( \zeta \right)\) for various \(D < 0.\)
(a) \(\theta \left( \zeta \right)\) for various \(D < 0.\) (b) \(\theta_{p} \left( \zeta \right)\) for various \(D < 0.\)