A Comprehensive Analysis of the Sequence X(n+2) = imX(n+1) + X(n) for X(1) = X(2) = 1 + i
Jasmine Stefano ⟨stefanojasmine@yahoo.com⟩
Abstract:
This research investigates the recursive sequence given by , where , with and being a parameter that assumes real values. We analyze the recursive sequence as a second-order difference equation with constant coefficients. By solving this equation, we derive explicit bounds on the parameter and obtain general equations to describe the resulting geometric shapes. Our analysis reveals how said bounds on influence the behavior of the sequence. We plot the sequence in the complex plane and as varies, we can see interesting geometric shapes formed from conic sections. When lies in the interval (-2,2), the sequence exhibits bounded behavior with points in the complex plane tracing two ellipses. For , the sequence becomes unbounded, leading to hyperbolic trajectories. This work explores the geometric nature of the solutions, examining how the sequence’s behavior evolves as the parameter varies.