The two primary references used to create my application were: “A Numerical Library in C for Scientists and Engineers” by H. T. Lau and the following website: https://en.wikipedia.org/wiki/Jacobi_polynomials.
Using the Jacobi parameters alpha = 0 and beta = 0, we have the Legendre polynomials for degrees 4 and 6 and their associated roots:




Using alpha = 0.5 and beta= 0.5 we obtain for degrees 4 and 6:



