?A manufacturer of lightbulbs wants to produce bulbs that last about 700 hours but, of
Chapter 7, Problem 79(choose chapter or problem)
A manufacturer of lightbulbs wants to produce bulbs that last about 700 hours but, of course, some bulbs burn out faster than others. Let be the fraction of the company's bulbs that burn out before
hours, so
always lies between 0 and 1 .
(a) Make a rough sketch of what you think the graph of might look like.
(b) What is the meaning of the derivative
(c) What is the value of ? Why?
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