Abstract
We consider the polynomials Tr,n(x) (n = 0, 1,…) generated by Chebyshev polynomials Tn(x) and forming a Sobolev orthonormal system with respect to the inner product
, where μ(x) = 2π−1(1 − x2)−1/2. It is shown that the Fourier sums in the polynomials Tr,n(x) (n = 0, 1,…) give a convenient and efficient tool for approximately solving the Cauchy problem for ordinary differential equations.
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Original Russian Text © I.I. Sharapudinov, 2018, published in Differentsial’nye Uravneniya, 2018, Vol. 54, No. 12, pp. 1645–1662.
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Sharapudinov, I.I. Sobolev Orthogonal Polynomials Associated with Chebyshev Polynomials of the First Kind and the Cauchy Problem for Ordinary Differential Equations. Diff Equat 54, 1602–1619 (2018). https://doi.org/10.1134/S0012266118120078
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DOI: https://doi.org/10.1134/S0012266118120078