and here is 6.3

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9. Using (6.3), construct the open Newton-Cotes formula for f11 fx) dx with nodes 1/2, 0, 1/2 and the closed Newton-Cotes formula with nodes -1, -1/3, 1/3, 1 9. Using (6.3), construct the open Newton-Cotes formula for f11 fx) dx with nodes 1/2, 0, 1/2 and the closed Newton-Cotes formula with nodes -1, -1/3, 1/3, 1