 Chebyshev derivative Sturm-Liouville pair

ID: chebyshev-derivative-sturm-liouville-pair

Codex  0 Created 2026-09-24 Updated 2026-09-24

The Chebyshev equation has self-adjoint form

(1 - x^{2} T_{n}^{'})^{'} + \frac{n ^{2}}{1 - x ^{2}} T_{n} = 0.

For

U_{n} = T_{n}^{'}

, differentiation gives

((1 - x^{2})^{3/2} U_{n}^{'})^{'} + (n^{2} - 1) 1 - x^{2} U_{n} = 0.

The respective orthogonality weights are

(1 - x^{2})^{- 1/2}

and

(1 - x^{2})^{1/2}

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