The function f(x) = – 4x* + 6.24x² + 53.784x + 1.62 is increasing on the open interval ( It is decreasing on the open interval( –00, and the open interval ( 0 ). The function has a local maximum at

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A: Explained below

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A: Follow next step

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A: Ellipse

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Q: 4- Find lim,: ( -) 10 20 (You cannot use numerical table method). tan(2)-1 tan?(2)–1)

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