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Algebra Level 4

Let a real valued function of a real variable be defined by

f(x)=psinx+q×x2009+15\displaystyle f(x) = p \sin x + q \times \sqrt[2009]{x} + 15

Then find

f(log20(log5(20)))+f(log20(log205))\displaystyle f(log_{20}(log_5(20))) + f(log_{20}(log_{20}5))

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