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When the car is traveling at a constant speed (of \(0\) ft/min), the graph of \(y=s'(t)\) is horizontal. While the car is speeding up, the graph of \(y=s'(t)\) has a positive slope while the car is slowing down, the graph of \(y=s'(t)\) has a negative slope. What can we learn by taking the derivative of the derivative (the second derivative) of a function \(f\text\) and \(t=11\) minutes. How does the derivative of a function tell us whether the function is increasing or decreasing at a point or on an interval? Section 1.7 The Second Derivative Motivating Questions
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A specialty in mathematical expressions is that the multiplication sign can be left out sometimes, for example we write '5x' instead of '5x'.