Page 39 Berresford/Rockett, Brief Applied Calculus, 6e 11.. Berresford/Rockett, Brief Applied Calculus, 6e ©2013 Cengage Learning.. For the function in this problem, find the instantane
Trang 1http://testbankair.com/download/test-bank-for-applied-Chapter 2 Derivatives And Their Uses
1 Complete the table and use it to predict the limit, if it exists
Trang 24 Use properties of limits and algebraic methods to find the limit, if it exists lim –7 8x
Trang 36 Use properties of limits and algebraic methods to find the limit, if it exists
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7 Use properties of limits and algebraic methods to find the limit, if
Trang 48 A graph of y f(x) is shown and a c-value is given For this
problem, use the graph to find lim (x)
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Berresford/Rockett, Brief Applied Calculus, 6e
11 Find limf ( x) for the graph
Trang 614 For the given x-value, use the figure to determine whether the function is continuous or discontinuous at that x-value
Trang 8Berresford/Rockett, Brief Applied Calculus, 6e
18 Determine whether the given function is continuous If it is not, identify where it
is discontinuous You can verify your conclusions by graphing the function with a graphing utility, if one is available
1
At P2 : negative slope
At P3 : positive slope C) At P : zero slope
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At P2 : positive slope
At P3 : negative slope D) At P : positive slope
1
At P2 : positive slope
At P3 : positive slope E) At P : positive slope
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20 Which graph represents f(x) if the graph of f ( x) is displayed below?
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Trang 11Berresford/Rockett, Brief Applied Calculus, 6e
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24 For the function in this problem, find the instantaneous rate of change of the function at the given value
Trang 13Berresford/Rockett, Brief Applied Calculus, 6e
27 For the function in this problem, find the derivative, by using
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29 Findf ' x off x –7 x8 by using the definition of the derivative
Trang 14Berresford/Rockett, Brief Applied Calculus, 6e
32 An automobile dealership finds that the number of cars that it sells on day x of an 2
advertising campaign is S x x 18x (for 0 x 7 ) Find S'x to find the
instantaneous rate of change on day x 2
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33 Differentiate the given function
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37 Find the derivative of the function
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Berresford/Rockett, Brief Applied Calculus, 6e
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45 Iff xx5 , find
A) df
–32
B) df
–192
dx x –2
C) df
320
D) df
–128
E) df 80
Ans: E
46 If f x 30
250
x
A) df 2
dx x 25 B) df
–2
dx x
25
C) df 10
dx x 25
D) df –10
dx x
25
E) df 4
dx x 25 Ans: A Berresford/Rockett, Brief Applied Calculus, 6e df dx x –2
x ,
find df dx x 25
47 Suppose the Marginal Cost Businesses can buy multiple licenses for PowerZip data 23 x compression software at a total cost of approximately C x 24xdollars for licenses Find the derivative of this cost function at x64
C 64 8
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A)
Ans: B
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48 Suppose the number of people newly inflected on day t of a flu epidemic is
Trang 23C) 6t 8 48t 5 24t 2
D) 9t 8 6t 5 3t 2
5 2 E) 9t 8 48t 24t
Ans: E
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Berresford/Rockett, Brief Applied Calculus, 6e
51 Find the derivative, but do not
simplify your answer y7x73x39x
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15
Find the derivative of f z z 28 z 14 1 z z by using the Product Rule
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54 Find the indicated derivative and simplify
Trang 27derivative and simplify
Trang 28removing p percent of the
particulate pollution from the exhaust gases at an industrial site is given by
find the rate of change of C with respect to p
Trang 29whiskey that a store will sell
in a month at a price of p
dollars
2250
of this quantity when the price is p
After x months, monthly sales of a compact disc are predicted to be S(x) x
Find the rate of change of the sales after 2 months in thousands per month.
Trang 30Berresford/Rockett, Brief Applied Calculus, 6e
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Berresford/Rockett, Brief Applied Calculus, 6e
Trang 3230x4 x4 Ans: C
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Find the second derivative of the function 2 x 7
Trang 34A)
B)
C)
2
Ans: C
feet) an object travels as a function of time
is the acceleration of the object when t 5?
A) 0 ft/sec
2
B) –34 ft/sec
2
C) –80 ft/sec2
2
E) 80 ft/sec
Ans: B
After t hours, a car is a distance s (t ) 60t t 4 miles from its starting point Find
the velocity after 6 hours
A) 51 miles/hour
B) 66 miles/hour
C) 54 miles/hour
D) 57 miles/hour E) 63 miles/hour
Ans: D
77
2 If f ( g ( x )) x 3 x 2 and f (x) x , find g ( x) A) x
56
(2 x 7)3
112
(2 x 7)3
112 (2x7)3
Trang 35B) x 3
C)
x 2 3 x 2
2 D) x 3 x 2
E)
x 3x 2
Ans: D
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78. If f ( g ( x)) 8 x 2 6x and g (x ) 8x 6x , find f(x) A) 1
x B) 1 8 x 6 C) 1 8 x 2 6 x
E) 2
Ans: A 8 x 6x
79. If f (g (x)) x 4 2 and f (x ) x 2 , find g(x) x 4 A) 2
x 4
B) x x 4
C) x2
D) 1
2 x 4
E) x 4
x 4
Ans: E
80. Find f '( x) for the given function 2 2 f (x ) 3 ( x 1)
A)
4 x x2 1
8 x 6x D) 1
1
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84. Differentiate the given function
Trang 3885. Differentiate the given function.3 4
Trang 39Berresford/Rockett, Brief Applied Calculus, 6e
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86. Differentiate the given function
Trang 41Berresford/Rockett, Brief Applied Calculus, 6e
©2013 Cengage Learning All Rights Reserved Page 73
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Find the marginal cost function and evaluate it for x 30 Round your answer
to two decimal places
compounded annually, 5 years later
5 its value will be V (r ) 1800(1 0.01r)
dollars Find V'(8) Round your answer to nearest cent
A) 122.44 dollars
B) 132.24 dollars
Trang 42Berresford/Rockett, Brief Applied Calculus, 6e
all x-values at which the derivative does not exist
all x-values at which the derivative does not exist
Trang 43Berresford/Rockett, Brief Applied Calculus, 6e
©2013 Cengage Learning All Rights Reserved Page 75
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calculator to calculate the derivative of the function f
(x) 12 at x 0 Is the calculator correct?
A) 2; No, the calculator is not correct B) 0; Yes, the calculator is correct
C) 1
2 ; No, the calculator is not correct
D) 0; No, the calculator is not
correct E) 2; Yes, the calculator is
correct Ans: D
not defined at that same point?
Ans: B