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Clavis TMUA Set A Paper 2 · Q1

Paper 2Functions & graphs

The function ff is defined for x>0x>0 by

f(x)=x2+6xx.f(x)=\frac{x^2+6\sqrt{x}}{x}.

Find the value of f′(9)f'(9).

A19\frac19
B89\frac89
C2627\frac{26}{27}
D11
E2827\frac{28}{27}
F109\frac{10}{9}

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