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1、<p> 微積分期中考 每題十分 共十題 總分100分</p><p> 日期:95.11.23</p><p> Find equations for these lines that is tangent to the graph of f for the given value of x.</p><p> (a)
2、 (b) </p><p> Find the give limit or show it does not exist . If the limit is infinite, indicate whether it is or -.</p><p> (a) (b) </p><p> (c) (d) </p&g
3、t;<p> List all the values of x for which the give function is not continuous </p><p> (a) (b)</p><p> Discuss the continuity of the function </p><p> Find th
4、e derivative of the given function </p><p> (a) (b)</p><p> (c) (d)</p><p> Find for given value of x </p><p> (a); for x=1&
5、lt;/p><p> (b), for x=3</p><p> A bookstore can obtain a certain gift book from the publisher at a cost of $3 per book. The bookstore has been offering the book at price of $15 per copy, and at
6、this price, has been selling 200 copies a month. The bookstore is planning to lower its price to stimulate sales and estimates that for each $1 reduction in the price, 20 more books will be sold each month. Express the b
7、ookstore’s monthly profit from the sales of this book as a function of the selling price, draw the graph, and estimate</p><p> A manufacturer can sell a certain product for $80 per unit. Total cost consists
8、 of a fixed overhead of $4,500 plus production costs of $50 per unit.</p><p> How many units must the manufacturer sell to break even?</p><p> What is the manufacturer’s profit or loss if 200
9、units are sold?</p><p> How many units must the manufacturer sell to realize a profit of $900?</p><p> An importer of Brazilian coffee estimates that local consumers will buy approximately D(p
10、)= pounds of the coffee per week when the price is p dollars per pound. It is also estimated that t weeks from now, the price of Brazilian coffee will be p(t)=6 dollars per pound.</p><p> At what rate will
11、the demand for coffee be changing with respect to price when the price is $9?</p><p> At what rate will the demand for coffee be changing with respect to time 10 weeks from now? Will the demand be increasin
12、g or decreasing at this time?</p><p> Bea Johnson, the owner of the Bea Nice boutique, estimates that when a particular kind of perfume is priced at p dollars per bottle, she will sell B(p)= </p>&l
13、t;p> bottles per month at a total cost of dollars</p><p> Express Bea’s profit P(p) as a function of the price p per bottle.</p><p> At what rate is the profit changing with respect to p
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