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What should I do in this Calculus Word Problem? 6. The profit selling x units of pipes is P(x)=420x-(1/4)x^2 a.Find the marginal profit function Pm b.What is the marginal profit for 800 units? c.What is the marginal profit for 900 units? d.Determine the value of x that will provide the maximum profit My Questions are: 1.In a. should I get the first derivative or the anti-derivative to have the marginal profit function? 2.In b & c. after getting the marginal profit function, should I replace x with 800 and 900 units? 3.In d. should I use trial and error in determining the value of x, or there is a easier way to do that? * Please give me tips on how to solve this problem *Just click the link for a clearer view of the question: ( Just look at question no.6 ) https://lh3.googleusercontent.com/-Lh968KtAvZU/UEs4hj_ZomI/AAAAAAAAAEI/YQaKo2zPyok/s800/2012-09-08%252020.20.15.jpg
What should I do in this Calculus Word Problem?
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