Pearson eText for Calculus for Business, Economics, Life Sciences, and Social Sciences, Brief Version -- Instant Access (Pearson+)
14th Edition
ISBN: 9780137400126
Author: Raymond Barnett, Michael Ziegler
Publisher: PEARSON+
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Chapter 9.2, Problem 82E
Learning. The number of words per minute. N, a person can type increases with practice. Suppose the rate of change of N is proportional to the difference between N and an upper limit of 140. It is reasonable to assume that a beginner cannot type at all. Thus, N = 0 when t = 0. If a person can type 35 words per minute after 10 hours of practice:
(A) How many words per minute can that individual type after 20 hours of practice?
(B) How many hours must that individual practice to be able to type 105 words per minute?
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Chapter 9 Solutions
Pearson eText for Calculus for Business, Economics, Life Sciences, and Social Sciences, Brief Version -- Instant Access (Pearson+)
Ch. 9.1 - Show that y=Cx+1 is the general solution of the...Ch. 9.1 - Prob. 2MPCh. 9.1 - Prob. 3MPCh. 9.1 - Prob. 4MPCh. 9.1 - Prob. 5MPCh. 9.1 - Prob. 1EDCh. 9.1 - Prob. 2EDCh. 9.1 - Prob. 1ECh. 9.1 - Prob. 2ECh. 9.1 - Prob. 3E
Ch. 9.1 - Prob. 4ECh. 9.1 - Prob. 5ECh. 9.1 - Prob. 6ECh. 9.1 - Prob. 7ECh. 9.1 - Prob. 8ECh. 9.1 - In Problems 110, find the derivative. (If...Ch. 9.1 - Prob. 10ECh. 9.1 - Prob. 11ECh. 9.1 - In Problems 1120, show that the given function is...Ch. 9.1 - Prob. 13ECh. 9.1 - Prob. 14ECh. 9.1 - Prob. 15ECh. 9.1 - Prob. 16ECh. 9.1 - Prob. 17ECh. 9.1 - Prob. 18ECh. 9.1 - Prob. 19ECh. 9.1 - Prob. 20ECh. 9.1 - Prob. 21ECh. 9.1 - In Problems 2124, determine which of the slope...Ch. 9.1 - In Problems 2124, determine which of the slope...Ch. 9.1 - Prob. 24ECh. 9.1 - Prob. 25ECh. 9.1 - In Problems 2528, use the appropriate slope...Ch. 9.1 - Prob. 27ECh. 9.1 - Prob. 28ECh. 9.1 - In Problems 2938, show that the given function y...Ch. 9.1 - Prob. 30ECh. 9.1 - Prob. 31ECh. 9.1 - In Problems 2938, show that the given function y...Ch. 9.1 - Prob. 33ECh. 9.1 - Prob. 34ECh. 9.1 - Prob. 35ECh. 9.1 - Prob. 36ECh. 9.1 - Prob. 37ECh. 9.1 - Prob. 38ECh. 9.1 - Prob. 39ECh. 9.1 - Prob. 40ECh. 9.1 - Prob. 41ECh. 9.1 - Prob. 42ECh. 9.1 - Prob. 43ECh. 9.1 - If y is defined implicitly by the given equation,...Ch. 9.1 - Prob. 45ECh. 9.1 - Prob. 46ECh. 9.1 - Prob. 47ECh. 9.1 - Prob. 48ECh. 9.1 - Prob. 49ECh. 9.1 - Prob. 50ECh. 9.1 - Prob. 51ECh. 9.1 - Prob. 52ECh. 9.1 - Prob. 53ECh. 9.1 - Prob. 54ECh. 9.1 - Prob. 55ECh. 9.1 - In Problems 55 and 56, use the general solution y...Ch. 9.1 - Prob. 57ECh. 9.1 - Prob. 58ECh. 9.1 - In Problems 59 and 60, use window dimensions Xmin...Ch. 9.1 - Prob. 60ECh. 9.1 - Prob. 61ECh. 9.1 - Prob. 62ECh. 9.1 - Prob. 63ECh. 9.1 - Prob. 64ECh. 9.1 - Prob. 65ECh. 9.1 - Prob. 66ECh. 9.1 - Rumor spreadGompertz growth model. The rate of...Ch. 9.2 - Solve: y=4x3y2.Ch. 9.2 - Prob. 2MPCh. 9.2 - Repeat Example 3 if the mothballs lose half their...Ch. 9.2 - Prob. 4MPCh. 9.2 - Prob. 5MPCh. 9.2 - Prob. 1EDCh. 9.2 - Prob. 2EDCh. 9.2 - Prob. 1ECh. 9.2 - Prob. 2ECh. 9.2 - Prob. 3ECh. 9.2 - Prob. 4ECh. 9.2 - Prob. 5ECh. 9.2 - In Problems 18, find the most general...Ch. 9.2 - Prob. 7ECh. 9.2 - Prob. 8ECh. 9.2 - Prob. 9ECh. 9.2 - In Problems 912, write a differential equation...Ch. 9.2 - In Problems 912, write a differential equation...Ch. 9.2 - Prob. 12ECh. 9.2 - Prob. 13ECh. 9.2 - Prob. 14ECh. 9.2 - Prob. 15ECh. 9.2 - Prob. 16ECh. 9.2 - Prob. 17ECh. 9.2 - Prob. 18ECh. 9.2 - Prob. 19ECh. 9.2 - Prob. 20ECh. 9.2 - Prob. 21ECh. 9.2 - In Problems 2130, find the general solution for...Ch. 9.2 - Prob. 23ECh. 9.2 - Prob. 24ECh. 9.2 - Prob. 25ECh. 9.2 - In Problems 2130, find the general solution for...Ch. 9.2 - Prob. 27ECh. 9.2 - Prob. 28ECh. 9.2 - In Problems 2130, find the general solution for...Ch. 9.2 - Prob. 30ECh. 9.2 - Prob. 31ECh. 9.2 - Prob. 32ECh. 9.2 - Prob. 33ECh. 9.2 - Prob. 34ECh. 9.2 - Prob. 35ECh. 9.2 - In Problems 3140, find the general solution for...Ch. 9.2 - Prob. 37ECh. 9.2 - Prob. 38ECh. 9.2 - Prob. 39ECh. 9.2 - In Problems 3140, find the general solution for...Ch. 9.2 - Prob. 41ECh. 9.2 - Prob. 42ECh. 9.2 - Prob. 43ECh. 9.2 - Prob. 44ECh. 9.2 - In Problems 4146, find the general solution for...Ch. 9.2 - Prob. 46ECh. 9.2 - Prob. 47ECh. 9.2 - Prob. 48ECh. 9.2 - Prob. 49ECh. 9.2 - Prob. 50ECh. 9.2 - Prob. 51ECh. 9.2 - Prob. 52ECh. 9.2 - Prob. 53ECh. 9.2 - Prob. 54ECh. 9.2 - Prob. 55ECh. 9.2 - Prob. 56ECh. 9.2 - Prob. 57ECh. 9.2 - Prob. 58ECh. 9.2 - Prob. 59ECh. 9.2 - Prob. 60ECh. 9.2 - Advertising. A company is using radio advertising...Ch. 9.2 - Prob. 62ECh. 9.2 - Prob. 63ECh. 9.2 - Prob. 64ECh. 9.2 - Prob. 65ECh. 9.2 - Prob. 66ECh. 9.2 - Prob. 67ECh. 9.2 - Prob. 68ECh. 9.2 - Prob. 69ECh. 9.2 - Prob. 70ECh. 9.2 - Prob. 71ECh. 9.2 - Prob. 72ECh. 9.2 - Newtons law of cooling states that the rate of...Ch. 9.2 - Prob. 74ECh. 9.2 - Population growth. A culture of bacteria is...Ch. 9.2 - Prob. 76ECh. 9.2 - Prob. 77ECh. 9.2 - Prob. 78ECh. 9.2 - Prob. 79ECh. 9.2 - Prob. 80ECh. 9.2 - Prob. 81ECh. 9.2 - Learning. The number of words per minute. N, a...Ch. 9.2 - Prob. 83ECh. 9.3 - Solve:xy+3y=4x.Ch. 9.3 - Prob. 2MPCh. 9.3 - Repeat Example 3 if the account earns 5%...Ch. 9.3 - If D = 70 + 2p(t) + 2p(t), S = 30 + 6p(t) + 3p(t)....Ch. 9.3 - Repeat Example 5 if water is released from the...Ch. 9.3 - Prob. 1EDCh. 9.3 - Prob. 2EDCh. 9.3 - Prob. 1ECh. 9.3 - Prob. 2ECh. 9.3 - Prob. 3ECh. 9.3 - Prob. 4ECh. 9.3 - Prob. 5ECh. 9.3 - Prob. 6ECh. 9.3 - Prob. 7ECh. 9.3 - Prob. 8ECh. 9.3 - Prob. 9ECh. 9.3 - Prob. 10ECh. 9.3 - Prob. 11ECh. 9.3 - Prob. 12ECh. 9.3 - Prob. 13ECh. 9.3 - Prob. 14ECh. 9.3 - Prob. 15ECh. 9.3 - Prob. 16ECh. 9.3 - Prob. 17ECh. 9.3 - Prob. 18ECh. 9.3 - Prob. 19ECh. 9.3 - Prob. 20ECh. 9.3 - Prob. 21ECh. 9.3 - Prob. 22ECh. 9.3 - Prob. 23ECh. 9.3 - In Problems 2334, find the integrating factor, the...Ch. 9.3 - Prob. 25ECh. 9.3 - In Problems 2334, find the integrating factor, the...Ch. 9.3 - Prob. 27ECh. 9.3 - Prob. 28ECh. 9.3 - In Problems 2334, find the integrating factor, the...Ch. 9.3 - Prob. 30ECh. 9.3 - Prob. 31ECh. 9.3 - Prob. 32ECh. 9.3 - Prob. 33ECh. 9.3 - In Problems 2334, find the integrating factor, the...Ch. 9.3 - Prob. 35ECh. 9.3 - Prob. 36ECh. 9.3 - Prob. 37ECh. 9.3 - Prob. 38ECh. 9.3 - In Problems 3514, find the integrating factor fix...Ch. 9.3 - In Problems 3514, find the integrating factor fix...Ch. 9.3 - Prob. 41ECh. 9.3 - Prob. 42ECh. 9.3 - Prob. 43ECh. 9.3 - Prob. 44ECh. 9.3 - Prob. 45ECh. 9.3 - Prob. 46ECh. 9.3 - Prob. 47ECh. 9.3 - Prob. 48ECh. 9.3 - Prob. 49ECh. 9.3 - Prob. 50ECh. 9.3 - Prob. 51ECh. 9.3 - Prob. 52ECh. 9.3 - Prob. 53ECh. 9.3 - Prob. 54ECh. 9.3 - Prob. 55ECh. 9.3 - Prob. 56ECh. 9.3 - Prob. 57ECh. 9.3 - Prob. 58ECh. 9.3 - Prob. 59ECh. 9.3 - Prob. 60ECh. 9.3 - Prob. 61ECh. 9.3 - Prob. 62ECh. 9.3 - Prob. 63ECh. 9.3 - Prob. 64ECh. 9.3 - Prob. 65ECh. 9.3 - Prob. 66ECh. 9.3 - Supply-demand. The supply S and demand D for a...Ch. 9.3 - Prob. 68ECh. 9.3 - Pollution. A 1,000-gallon holding tank contains...Ch. 9.3 - Pollution. Rework Problem 69 if water is entering...Ch. 9.3 - Pollution. Rework Problem 69 if water is entering...Ch. 9.3 - Prob. 72ECh. 9.3 - Pollution. Refer to Problem 69. When will the tank...Ch. 9.3 - Prob. 74ECh. 9.3 - Prob. 75ECh. 9.3 - Prob. 76ECh. 9.3 - Prob. 77ECh. 9.3 - In an article in the College Mathematics Journal...Ch. 9.3 - Prob. 79ECh. 9.3 - In 1960, William K. Estes proposed the following...Ch. 9 - In Problems 1 and 2, show that the given function...Ch. 9 - In Problems 1 and 2, show that the given function...Ch. 9 - In Problems 3 and 4, determine which of the...Ch. 9 - In Problems 3 and 4, determine which of the...Ch. 9 - In Problems 5 and 6, use the appropriate slope...Ch. 9 - In Problems 5 and 6, use the appropriate slope...Ch. 9 - In Problems 7 and 8, write a differential equation...Ch. 9 - In Problems 7 and 8, write a differential equation...Ch. 9 - In Problems 9 and 10, describe in words the rate...Ch. 9 - In Problems 9 and 10, describe in words the rate...Ch. 9 - In Problems 1116, determine whether the...Ch. 9 - In Problems 1116, determine whether the...Ch. 9 - In Problems 1116, determine whether the...Ch. 9 - In Problems 1116, determine whether the...Ch. 9 - In Problems 1116, determine whether the...Ch. 9 - Prob. 16RECh. 9 - In Problems 1724, find the general solution....Ch. 9 - In Problems 1724, find the general solution....Ch. 9 - In Problems 1724, find the general solution....Ch. 9 - In Problems 1724, find the general solution....Ch. 9 - In Problems 1724, find the general solution....Ch. 9 - In Problems 1724, find the general solution....Ch. 9 - Prob. 23RECh. 9 - In Problems 1724, find the general solution....Ch. 9 - In Problems, 2532, find the particular solution...Ch. 9 - In Problems, 2532, find the particular solution...Ch. 9 - In Problems, 2532, find the particular solution...Ch. 9 - In Problems, 2532, find the particular solution...Ch. 9 - In Problems, 2532, find the particular solution...Ch. 9 - In Problems, 2532, find the particular solution...Ch. 9 - In Problems, 2532, find the particular solution...Ch. 9 - In Problems, 2532, find the particular solution...Ch. 9 - Solve the following differential equation two...Ch. 9 - Give an example of an equation that can be solved...Ch. 9 - Prob. 35RECh. 9 - Prob. 36RECh. 9 - Prob. 37RECh. 9 - Prob. 38RECh. 9 - Prob. 39RECh. 9 - Prob. 40RECh. 9 - Prob. 41RECh. 9 - Prob. 42RECh. 9 - Prob. 43RECh. 9 - Prob. 44RECh. 9 - Prob. 45RECh. 9 - Prob. 46RECh. 9 - Prob. 47RECh. 9 - Rumor spread. A single individual starts a rumor...
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