a. Show that H2n+1(x) is the unique polynomial of least degree agreeing with f and f ' at x0, . . . , xn. [Hint: Assume that P(x) is another such polynomial and consider D = H2n+1 − P and D ' at x0, x1, . . . , xn.]
b. Derive the error term in Theorem 3.9. [Hint: Use the same method as in the Lagrange error derivation, Theorem 3.3, defining
Reference: Theorem 3.9
Reference: Theorem 3.3
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