Math Question: Find the derivative of f(x) = 3x^2 - 4x + 5.
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What is the value of f(x) when x = 10, given f(x) = log x / f(x) = ln x?
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Math question: In triangle ABC, if angle A is congruent to angle B and side AC is congruent to side BC, what is the relationship between angles B and C?