What is the value of x if f(x) = log x and f(x) = ln x, given that log represents logarithm base 10, ln represents natural logarithm (base e), and the value of f(x) is equal to 3?
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Math Question: In a circle, if angle ABC is 90° and diameter AC is 10 cm, what is the length of chord AB?
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What is the value of x at the extremum point(s) for the function f(x) = 2x^3 - 9x^2 + 12x - 4?