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      Graphical Representation of Meixner-Pollaczek Polynomials
Definition
The Meixner-Pollaczek polynomials are defined as
\[
  \begin{align}
    P_n^\lambda(x;\phi) &= \frac{(2 \lambda)_n}{n!} e^{i n \phi} \sum_{k=0}^n \frac{(-n)_k (\lambda + i x)_k}{(2\lambda)_k k!} \left(1-e^{-2i\phi}\right)^k\\
                          &= \frac{(2 a)_n}{n!} e^{i n \phi} {}_2F_1 \left(\left. {-n, \lambda+i x \atop 2\lambda} \; \right| 1-e^{-2i \phi} \right)
  \end{align}
\]
Plot
Note: You can choose a selection on the small graph in order to zoom. Mark the check boxes on the left side for which n you want to plot the graph.
