a note on finite quadrature rules with a kind of freud weight function

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ID: 154975
2009
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Abstract
We introduce a finite class of weighted quadrature rules with the weight function |x|โˆ’2๐‘Žexp(โˆ’1/๐‘ฅ2) on (โˆ’โˆž,โˆž) as โˆซโˆžโˆ’โˆž|๐‘ฅ|โˆ’2๐‘Žexp(โˆ’1/๐‘ฅ2โˆ‘)๐‘“(๐‘ฅ)๐‘‘๐‘ฅ=๐‘›๐‘–=1๐‘ค๐‘–๐‘“(๐‘ฅ๐‘–)+๐‘…๐‘›[๐‘“], where ๐‘ฅ๐‘– are the zeros of polynomials orthogonal with respect to the introduced weight function, ๐‘ค๐‘– are the corresponding coefficients, and ๐‘…๐‘›[๐‘“] is the error value. We show that the above formula is valid only for the finite values of ๐‘›. In other words, the condition ๐‘Žโ‰ฅ{max๐‘›}+1/2 must always be satisfied in order that one can apply the above quadrature rule. In this sense, some numerical and analytic examples are also given and compared.
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aghigh2009mathematicala Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors ;Kamal Aghigh;M. Masjed-Jamei
Journal journal of power sources
Year 2009
DOI
10.1155/2009/421546
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