What is the maximum value of the quadratic function f(x) = -2x^2 + 5x + 3 in the interval [-1, 3]?
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Given the function y = 3sin(2x), what is the period of this trigonometric function?
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What is the general equation for an ellipse in the form \(\frac{{(x-h)^2}}{{a^2}} + \frac{{(y-k)^2}}{{b^2}} = 1\) and its foci and major/minor axis lengths?