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Gresty Academy Paper 1 · Q13

Paper 1Algebra

If

f(x)=1−1xf(x)=1-\frac1x

then

f(999)(x)=f^{(999)}(x)=

[Note: f(n)(x)f^{(n)}(x) means the composite of ff with itself nn times]

A1−1x1-\frac1x
B11
C1+1x1+\frac1x
Dxx
E−1x−1\frac{-1}{x-1}

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