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Official papers

Official 2017 Paper 1 · Q2

Paper 1Functions & graphs

The function ff is given by

f(x)=(2x−12x2)2(x≠0)f(x)=\left(\frac2x-\frac1{2x^2}\right)^2\qquad(x\ne0)

What is the value of f′′(1)f''(1)?

A−3-3
B−1-1
C55
D1717
E2929
F8080

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