Exam 3: Differentiation
Exam 1: Preliminaries205 Questions
Exam 2: Functions, Limits and the Derivative269 Questions
Exam 3: Differentiation330 Questions
Exam 4: Applications of the Derivative182 Questions
Exam 5: Exponential and Logarithmic Functions278 Questions
Exam 6: Integration314 Questions
Exam 7: Additional Topics in Integration250 Questions
Exam 8: Calculus of Several Variables206 Questions
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Let f be the function defined by
. Find the approximate change in y if x changes from 1 to 1.08. Find the actual change in y if x changes from 1 to 1.08.

Free
(Multiple Choice)
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Correct Answer:
C
The percent of mothers who work outside the home and have children younger than age 6 yr is approximated by the function
where t is measured in years, with t = 0 corresponding to the beginning of 1980. Compute
.


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(Multiple Choice)
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Correct Answer:
E
Custom Office makes a line of executive desks. It is estimated that the total cost for making x units of their Senior Executive model is
dollars/year. Find the marginal average cost function
.


(Multiple Choice)
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Let f be the function defined by
. Use the differential of f to find the approximate change in y if x changes from 4 to 4.1.

(Multiple Choice)
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Acrosonic's production department estimates that the total cost (in dollars) incurred in manufacturing x ElectroStat speaker systems in the first year of production will be
. The demand equation is
. Select the graph of the profit function.


(Multiple Choice)
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Suppose f and g are functions that are differentiable at
and that
,
,
, and
. Find the value of
. 







(Multiple Choice)
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Find an equation of the tangent line to the graph of the function
at the point
.


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A spectator watches a rowing race from the edge of a river bank. The lead boat is moving in a straight line that is 330 ft from the river bank. If the boat is moving at a constant speed of 20 ft/sec, how fast is the boat moving away from the spectator when it is 560 ft past her?
Round the answer to the nearest hundredth, if necessary.
__________ ft/sec
(Short Answer)
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The total weekly cost (in dollars) incurred by a company in pressing x compact discs is
. What is the marginal cost when
and
?



(Multiple Choice)
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An economy's consumer price index (CPI) is described by the function
, where
corresponds to 1995. At what rate was the CPI changing in 2002?


(Multiple Choice)
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A 5-ft tall man is walking away from a street light 10 ft high at a speed of 4 ft/sec . How fast is the tip of his shadow moving along the ground?
__________ ft/sec
(Short Answer)
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Find an equation of the tangent line to the graph of the function at the point
. 


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