Math question: What is the probability of getting two heads when flipping a fair coin twice?
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Find the period of the trigonometric function f(x) = 3sin(5x) + 2cos(4x).
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Math question: Determine the vertex coordinates of the parabola given by the function 𝑦 = 2𝑥² + 3. What is the significance of the coefficient of the quadratic term?