About a dubious proof of a correct result about closed Newton Cotes error formulas

About a dubious proof of a correct result about closed Newton Cotes error formulas

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In this study, we comment about a ORG SEA SALTED PISTACHIOS wrong proof, at least incomplete, of the closed Newton Cotes error formulas for integration in a closed interval [a,b].left[a,b].These error formulas appear as an intuitive generalization of the simple proof for the error formula of the trapezoidal rule, and their proofs present one controversial step, which converts the proofs in mischievous, or at least, this step needs a clear clarification that it is not easy to derive.

The Condensate Pump correct proof of such formulas comes from a technique based on the Peano kernel.