[Solution Library] For f (x) = 18 - x 2 , find the slope of the secant line connecting the points whose x -coordinates are x = -5 and x = -4.9. Then use
Question: For f ( x ) = 18 – x 2 , find the slope of the secant line connecting the points whose x -coordinates are x = –5 and x = –4.9. Then use calculus to find the slope of the line that is tangent to the graph of f at x = 5.
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