In Problems 9–44, find each indefinite integral and check the result by differentiating.
41.
∫
e
2
x
(
1
+
e
2
x
)
3
d
x
With differentiation, one of the major concepts of calculus. Integration involves the calculation of an integral, which is useful to find many quantities such as areas, volumes, and displacement.
Let y(t) represent your retirement account balance, in dollars, after t years. Each year the account earns
7% interest, and you deposit 8% of your annual income. Your current annual income is $34000, but it is
growing at a continuous rate of 2% per year.
Write the differential equation modeling this situation.
dy
dt
8:37
▬▬▬▬▬▬▬▬▬
Ο
Graph of f
The figure shows the graph of a periodic function
f in the xy-plane. What is the frequency of f?
0.5
B
2
C
3
D
8
3 of 6
^
Oli
Back
Next
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2. The growth of bacteria in food products makes it necessary to time-date some products (such as milk) so that
they will be sold and consumed before the bacteria count is too high. Suppose for a certain product that the number
of bacteria present is given by
f(t)=5000.1
Under certain storage conditions, where t is time in days after packing of the product and the value of f(t) is in
millions.
The solution to word problems should always be given in a complete sentence, with appropriate units, in the
context of the problem.
(a) If the product cannot be safely eaten after the bacteria count reaches 3000 million, how long will this take?
(b) If t=0 corresponds to January 1, what date should be placed on the product?
Chapter 5 Solutions
Calculus for Business Economics Life Sciences and Social Sciences Plus NEW
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Definite Integral Calculus Examples, Integration - Basic Introduction, Practice Problems; Author: The Organic Chemistry Tutor;https://www.youtube.com/watch?v=rCWOdfQ3cwQ;License: Standard YouTube License, CC-BY