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4-37.

Sketch a graph of . At what point(s) will the line tangent to be parallel to the secant line through  and ?

Calculate the slope of the secant between .

We want to know where the slope of the tangent is the same as the slope of the secant. Recall that the slope of the tangent is also
known as , find where .

The slope of the tangent the slope of the secant at coordinate points ( ________, _________ ) and ( ________, _________ ). You must analytically compute the exact coordinates, but note that the slope of tangents lines is at the local maximum and local minimum.

Use the eTool below to examine the graph.
Click the link at right for the full version of the eTool: Calc 4-37 HW eTool