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Addendum to my derivation of the interpolation formulas. - MaRDI portal

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Addendum to my derivation of the interpolation formulas. (Q1513634)

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scientific article; zbMATH DE number 2665347
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Addendum to my derivation of the interpolation formulas.
scientific article; zbMATH DE number 2665347

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    Addendum to my derivation of the interpolation formulas. (English)
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    1900
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    Wird \((x_m - x_0)(x_m - x_1)\dots(x_m - x_g) = P_{mg}\) gesetzt, so ergiebt sich durch Auflösung der für \(r_1\), \(r_2\), ... aufgestellten Gleichungen (vergl. F. d. M. 30, 241, 1899, JFM 30.0241.01) mit Determinanten \[ r_\nu = \frac{\delta_\nu y_\nu + \delta_{\nu-1}y_{\nu-1}+\cdots+ \delta_1 y_1+\delta_0 y_0}{1\cdot P_{10}P_{21}\dots P_{\nu-1\nu-2}P_{\nu\nu-1}}. \] Hierin ist \(\delta_\nu=1\cdot P_{10}P_{21}\dots P_{\nu-1\nu-2}\); demnach ergiebt sich auch hier, dass der Teil mit \(y_\nu\) gleich \(y_\nu/(x_\nu-x_0)(x_\nu-x_1)\dots(x_\nu-x_{\nu-1})\) ist.
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    Interpolation of polynomials
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