Answer
first derivative $=-4.2t+7$
second derivative $=-4.2$
Work Step by Step
first derivative $= (-2.1t^2+7t)' = -4.2t+7$
second derivative = derivative of the first derivative $ = (-4.2t+7)' = -4.2$
Calculus Concepts: An Informal Approach to the Mathematics of Change 5th Edition
by LaTorre, Donald R.; Kenelly, John W.; Reed, Iris B.; Carpenter, Laurel R.; Harris, Cynthia R.
Published by
Brooks Cole
ISBN 10:
1-43904-957-2
ISBN 13:
978-1-43904-957-0
Chapter 4 - Analyzing Change: Applications of Derivatives - 4.4 Activities - Page 281: 10
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