Show that S 2 also gives the exact value for b a x 3 dx and

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Show that Salso gives the exact value for ∫bx3 dx and conclude, as in Exercise 63, that Sis exact for all cubic polynomials. Show by counterexample that S2 is not exact for integrals of x4.


Data From Exercise 63

For N even, divide [a, b] into N subintervals of width Δx = b − a/N. Set x= a + j Δx, y= ƒ(xj), and

s2= b-a 3N (V2j + 4y2j+1 + y2j+2)

(a) Show that Sy is the sum of the approximations on the intervals [X2, X2j+2]that is, Sy = S + S2 + ... +


Data From Exercise 62

that Show that if f(x) = px + qx +r is a quadratic polynomial, then S = = 6 f(x where yo = = f(a), y = f a +

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Calculus

ISBN: 9781319055844

4th Edition

Authors: Jon Rogawski, Colin Adams, Robert Franzosa

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