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tmua.fyi Paper 2 Challenge 1 · Q19

Paper 2StatisticsAlgebra

The arithmetic-geometric mean inequality states that u+v≥2uvu+v\ge2\sqrt{uv} for all positive reals u,vu,v. Using only this fact, the minimum value of x+9xx+\frac9x for x>0x>0 is:

A33
B66
C99
D00
Ethere is no minimum

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