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19 July, 19:00

Find the derivative of f (x) = 11x2 + 5x at x = 9.

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  1. 19 July, 19:11
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    F (x) = 11x² + 5x

    f' (x) = 22x + 5

    Hence,

    f' (9) = (22 * 9) + 5 = 198 + 5 = 203
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