(a) Graph y = x3 − 2x2 + x − 2 in the standard window.
(b) Use the trace feature to show that the portion of the graph with 0 ≤ x ≤ 1.5 is not actually horizontal. [Hint: All the points on a horizontal segment must have the same y-coordinate (why?).]
(c) Find a viewing window that clearly shows that the graph is not horizontal when 0 ≤ x ≤ 1.5.
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