On the degree of approximation of functions of two variables by some operators
Keywords:
function of two variables, positive linear operator, degree of approximation, Voronovskaya theorem
Abstract
We introduce operators of Szász-Mirakyan and Baskakov type in polynomial weighted spaces of functions of two variables. We prove a theorem on the degree of approximation and a Voronovskaya type theorem for these operators. Similar results for Bernstein, Szász-Mirakyan and Baskakov operators of functions of one variable were given in [3-6].
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