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.(adsbygoogle = window.adsbygoogle || []).push({});

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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# Newton cotes formulae proofs

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