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JingleBells

P-Set 2A-8 (Quadratic Approx. 1/(1-x) near x=1/2) I keep getting f(x)~=2+4(x-1/2)+16(x-1/2)^2 since f"(x) at x=1/2 is 2(1-1/2)^(-3)=16 instead of 8 in the answer...anyone?

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