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Newton cotes formulae proofs

by akerman
Tags: cotes, formulae, newton, proofs
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Mar24-14, 04:04 PM
P: 1
I am looking for two proofs they both are based on newton cotes formulae which is is in the equi spaced points xi=a+ih with h=(b−a)/n and i=0,,n.

First proof is for ωj=ωn−j
The second one is ∑jωj=(b−a)
ω is the weight

Does anyone have a link where its explained or can someone properly show how to prove them ?
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