Let f (x) be a positive real number and f (1 / 2) = 12. For any real number x and y, f (XY) = f (x) + F (y) 3. F (x) is a decreasing function 1) Find the values of F (1 / 4), f (1 / 8), f (1), f (2), f (4) 2) Solution to inequality; f (- x) + F (3-x) ≥ - 2

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• 11. Additional score 150 points! ~ mathematical emperor to answer! About the score to find the law! Challenge the limit! Kneel` 1 × 1 / 3 = 1 / 2 * (1-1 / 3), 3 × 1 / 5 = 1 / 2 * (1 / 3-1 / 5), 5 × 1 / 7 = 1 / 2 * (1 / 5-1 / 7) It can be calculated according to the observation: 1 × 1 / 3 + 3 × 1 / 5 + 5 × 1 / 7 + +2009 × 2011 1 / 2 =? (urgent, kneel down, tonight! Tell me the law, write down the law in the form of algebra! And the answer) good answer, timely answer, add score 200!
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