MYLAB MATH FOR EXCURSIONS IN MATHEMATIC
9th Edition
ISBN: 9780136415893
Author: Tannenbaum
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Chapter 9, Problem 26E
The world population reached 6 billion people in 1999 and 7 billion in 2012. (Source: Negative Population Growth, www.npg.org.). Assuming a linear growth model for the world population,
a. predict the year when the world population would reach 8 billion.
b. predict the world population in 2020.
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Question 1. Solve the system
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x1 x2 + 3x3 + 2x4
-x1 + x22x3 + x4
2x12x2+7x3+7x4
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3x1 - x2 + ax3
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x1 + 3x2 + 2x3
x12x2+2x3
= -b
= 4
1 For what values of a, b will the system be inconsistent?
2 For what values of a, b will the system have only one solution?
For what values of a, b will the saystem have infinitely many solutions?
Question 5. Let A, B, C ben x n-matrices, S is nonsigular. If A = S-1 BS, show that
det (A) = det (B)
Question 6. For what values of k is the matrix A = (2- k
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k
Chapter 9 Solutions
MYLAB MATH FOR EXCURSIONS IN MATHEMATIC
Ch. 9 - Consider the sequence defined by the explicit...Ch. 9 - Consider the sequence defined by the explicit...Ch. 9 - Consider the sequence defined by the explicit...Ch. 9 - Consider the sequence defined by the explicit...Ch. 9 - Consider the sequence defined by the explicit...Ch. 9 - Consider the sequence defined by the explicit...Ch. 9 - Consider the sequence defined by the explicit...Ch. 9 - Consider the sequence defined by the explicit...Ch. 9 - Consider the sequence defined by the explicit...Ch. 9 - Consider the sequence 1,4,9,16,25,.... a. List the...
Ch. 9 - Consider the sequence 1,2,6,24,120,.... a. List...Ch. 9 - Consider the sequence 0,1,3,6,10,15,21.... a. List...Ch. 9 - Prob. 14ECh. 9 - Consider the sequence 1,85,2,167,208,.... a. List...Ch. 9 - Prob. 16ECh. 9 - Airlines would like to board passengers in the...Ch. 9 - When two fair coins are tossed the probability of...Ch. 9 - Consider a population that grows linearly...Ch. 9 - Consider a population that grows linearly...Ch. 9 - Consider a population that grows linearly...Ch. 9 - Consider a population that grows linearly...Ch. 9 - Consider a population that grows linearly, with...Ch. 9 - Consider a population that grows linearly, with...Ch. 9 - Official unemployment rates for the U.S....Ch. 9 - The world population reached 6 billion people in...Ch. 9 - The Social Security Administration uses a linear...Ch. 9 - While the number of smokers for the general adult...Ch. 9 - Use the arithmetic sum formula to find the sum...Ch. 9 - Prob. 30ECh. 9 - An arithmetic sequence has first term P0=12 and...Ch. 9 - An arithmetic sequence has first term P0=1 and...Ch. 9 - Find the sum a. 1+3+5+7++149.Hint: See Example...Ch. 9 - Find the sum a. 2+4+6++98. b. 2+4+6+75terms.Ch. 9 - The city of Lightsville currently has 137...Ch. 9 - Prob. 36ECh. 9 - A population grows according to an exponential...Ch. 9 - A population grows according to an exponential...Ch. 9 - A population grows according to the recursive rule...Ch. 9 - Prob. 40ECh. 9 - Crime in Happyville is on the rise. Each year the...Ch. 9 - Prob. 42ECh. 9 - Prob. 43ECh. 9 - Avian influenza A H5N1 is a particularly virulent...Ch. 9 - In 2010 the undergraduate enrollment at Bright...Ch. 9 - In 2009 there were 73 cases of avian influenza A...Ch. 9 - Consider the geometric sequence P0=2, P1=6, P2=18,...Ch. 9 - Consider the geometric sequence P0=4, P1=6, P2=9,...Ch. 9 - Consider the geometric sequence P0=4, P1=2, P2=1,....Ch. 9 - Consider the geometric sequence P0=10, P1=2,...Ch. 9 - Find the sum a. 1+2+22+23++215. b. 1+2+22+23++2N1...Ch. 9 - Find the sum a. 1+3+32+33++310. b. 1+3+32+33++3N1....Ch. 9 - A population grows according to the logistic...Ch. 9 - A population grows according to the logistic...Ch. 9 - For the population discussed in Exercise 53...Ch. 9 - Prob. 56ECh. 9 - Prob. 57ECh. 9 - Prob. 58ECh. 9 - Prob. 59ECh. 9 - Prob. 60ECh. 9 - A population grows according to the logistic...Ch. 9 - A population grows according to the logistic...Ch. 9 - Each of the following sequences follows a linear,...Ch. 9 - Each of the line graph shown in Figs. 9-19 through...Ch. 9 - Prob. 65ECh. 9 - Prob. 66ECh. 9 - Prob. 67ECh. 9 - Prob. 68ECh. 9 - Prob. 69ECh. 9 - Prob. 70ECh. 9 - Prob. 71ECh. 9 - Prob. 72ECh. 9 - Prob. 73ECh. 9 - Prob. 74ECh. 9 - Prob. 75ECh. 9 - Show that if P0,P1,P2,... is an arithmetic...
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