Excursions In Modern Mathematics, 9th Edition
9th Edition
ISBN: 9780134494142
Author: Tannenbaum
Publisher: PEARSON
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Chapter 9, Problem 52E
Find the sum
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b.
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Suppose that R(x) is a polynomial of degree 7 whose coefficients are real numbers.
Also, suppose that R(x) has the following zeros.
-1-4i, -3i, 5+i
Answer the following.
(a) Find another zero of R(x).
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Suppose that R (x) is a polynomial of degree 7 whose coefficients are real numbers.
Also, suppose that R (x) has the following zeros.
-1-4i, -3i, 5+i
Answer the following.
(c) What is the maximum number of nonreal zeros that R (x) can have?
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Chapter 9 Solutions
Excursions In Modern Mathematics, 9th Edition
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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- Given r = e−p2−q2, p = es, q = e−s, find dr/dsarrow_forwardSuppose that R (x) is a polynomial of degree 7 whose coefficients are real numbers. Also, suppose that R (x) has the following zeros. -1-4i, -3i, 5+i Answer the following. (b) What is the maximum number of real zeros that R (x) can have? ☐arrow_forward30. An individual who has automobile insurance from a certain company is randomly selected. Let Y be the num- ber of moving violations for which the individual was cited during the last 3 years. The pmf of Y isy | 1 2 4 8 16p(y) | .05 .10 .35 .40 .10 a.Compute E(Y).b. Suppose an individual with Y violations incurs a surcharge of $100Y^2. Calculate the expected amount of the surcharge.arrow_forward
- i need help please dont use chat gptarrow_forward24. An insurance company offers its policyholders a num- ber of different premium payment options. For a ran- domly selected policyholder, let X = the number of months between successive payments. The cdf of X is as follows: F(x)=0.00 : x < 10.30 : 1≤x<30.40 : 3≤ x < 40.45 : 4≤ x <60.60 : 6≤ x < 121.00 : 12≤ x a. What is the pmf of X?b. Using just the cdf, compute P(3≤ X ≤6) and P(4≤ X).arrow_forwardAssignment Brief: 1. Use the trapezium rule with five ordinates (four strips) to find an approximation to giving your answer to 2 decimal places. 1 dx x³ +3arrow_forward
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- If 50 is 10% of 500 lanterns, what percent is 100 out of 500 lanterns?arrow_forwardwhat is 4m-1? m=3arrow_forward53. A certain shop repairs both audio and video compo- nents. Let A denote the event that the next component brought in for repair is an audio component, and let B be the event that the next component is a compact disc player (so the event B is contained in A). Suppose that P(A) = .6 and P(B) = .05. What is P(BA)?arrow_forward
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