Math Question: What is the maximum possible value of the function f(x) = 3x^2 - 6x - 5 when x belongs to the interval [-2, 3]?
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What is the cosine of an angle if the opposite side is 5 and the hypotenuse is 13?
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Question: What are the characteristics of the quadratic function f(x) = x^2, such as the vertex, axis of symmetry, and whether it opens upward or downward?