What is the period of the trigonometric function y = 3sin(4x) cos(2x) - tan(5x) in radians?
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Question: What is the maximum or minimum value of the quadratic function f(x) = 2x^2 + 5x + 3 within the interval [-2, 4]?
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Math question: Given triangle ABC, where angle BAC measures 60° and the angle bisector of angle BAC intersects side BC at point D, if AC = 8 cm and AD = 4 cm, find the length of BD.