8. The value V (in thousands of dollars) of an industrial machine is modeled by V(N) = (3N + 430) 2/3 (N + 1)2/3 where N is the number of hours the machine is used each day. Suppose further that usage varies with time in such a way that N(t) = √²-10t + 61 where t is the number of months the machine has been in operation. Over what time interval is the value of the machine increasing? When it is decreasing? At what time t is the value of the machine the largest? What is the maximum value?
8. The value V (in thousands of dollars) of an industrial machine is modeled by V(N) = (3N + 430) 2/3 (N + 1)2/3 where N is the number of hours the machine is used each day. Suppose further that usage varies with time in such a way that N(t) = √²-10t + 61 where t is the number of months the machine has been in operation. Over what time interval is the value of the machine increasing? When it is decreasing? At what time t is the value of the machine the largest? What is the maximum value?
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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