SOLUTION: The effectiveness of a television commercial depends on how many times a viewer watches it. After some experiments an advertising agency found that if the effectiveness E is measur
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Question 906157: The effectiveness of a television commercial depends on how many times a viewer watches it. After some experiments an advertising agency found that if the effectiveness E is measured on a scale of 0 to 10, then
E(n) =
A beter view: http://i.imgur.com/kG6LIka.png
where n is the number of times a viewer watches a given commercial. For a commercial to have maximum effectiveness, how many times should a viewer watch it? ____ times
Answer by MathLover1(20849) (Show Source): You can put this solution on YOUR website!
as I can see on image, you have this
For this problem, E(n) is a function of n. We're trying to find the maximum value of E(n).
Assuming this is for a pre-calculus or calculus course, they probably want you to take the derivative.
So the derivative is:
E'
The maximum then occurs when .
So , and or .
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