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If the first parameter is a non-negative integer, the JacobiP(n, a, b, x) function computes the nth Jacobi polynomial with parameters a and b evaluated at x.
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These polynomials are orthogonal on the interval with respect to the weight function when a and b are greater than -1. They satisfy the following:
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The polynomials satisfy the following recurrence relation:
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For n and not equal to a non-negative integer and a not a negative integer, the analytic extension of the Jacobi polynomial is given by the following:
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