Question: Let f(x) = x 2 . a. Compute the slope of the secant line joining the points on the graph of f whose x coordinates

Let f(x) = x2.

a. Compute the slope of the secant line joining the points on the graph of f whose x coordinates are x = −2 and x = −1.9.

b. Use calculus to compute the slope of the line that is tangent to the graph when x = −2, and compare with the slope found in part (a).

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