Linear Algebra and Its Applications (5th Edition)
5th Edition
ISBN: 9780321982384
Author: David C. Lay, Steven R. Lay, Judi J. McDonald
Publisher: PEARSON
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Textbook Question
Chapter 8.5, Problem 19E
If c ϵ ℝ and S is a set, define cS = {cx : x ϵ S}. Let S be a convex set and suppose c > 0 and d > 0. Prove that cS + dS = (c + d)S.
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part 3 of the question is:
A power outage occurs 6 min after the ride started. Passengers must wait for their cage to be manually cranked into the lowest position in order to exit the ride. Sine function model: where h is the height of the last passenger above the ground measured in feet and t is the time of operation of the ride in minutes.
What is the height of the last passenger at the moment of the power outage? Verify your answer by evaluating the sine function model.
Will the last passenger to board the ride need to wait in order to exit the ride? Explain.
2. The duration of the ride is 15 min.
(a) How many times does the last passenger who boarded the ride make a complete loop on the Ferris
wheel?
(b) What is the position of that passenger when the ride ends?
3. A scientist recorded the movement of a pendulum for 10 s. The scientist began recording when the pendulum
was at its resting position. The pendulum then moved right (positive displacement) and left (negative
displacement) several times. The pendulum took 4 s to swing to the right and the left and then return to its
resting position. The pendulum's furthest distance to either side was 6 in. Graph the function that represents
the pendulum's displacement as a function of time.
Answer:
f(t)
(a) Write an equation to represent the displacement of the pendulum as a function of time.
(b) Graph the function.
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Chapter 8 Solutions
Linear Algebra and Its Applications (5th Edition)
Ch. 8.1 - Plot the points v1=[10],v2=[12], v3=[31], and...Ch. 8.1 - In Exercises 14, write y as an affine combination...Ch. 8.1 - In Exercises 14, write y as an affine combination...Ch. 8.1 - In Exercises 14, write y as an affine combination...Ch. 8.1 - In Exercises 14, write y as an affine combination...Ch. 8.1 - Prob. 5ECh. 8.1 - Prob. 6ECh. 8.1 - Prob. 7ECh. 8.1 - Prob. 8ECh. 8.1 - Prob. 9E
Ch. 8.1 - Suppose that the solutions of an equation Ax = b...Ch. 8.1 - Prob. 11ECh. 8.1 - a. If S = {x}, then aff S is the empty set. b. A...Ch. 8.1 - Prob. 13ECh. 8.1 - Prob. 14ECh. 8.1 - Prob. 15ECh. 8.1 - Prob. 16ECh. 8.1 - Choose a set S of three points such that aff S is...Ch. 8.1 - Prob. 18ECh. 8.1 - Prob. 19ECh. 8.1 - Prob. 20ECh. 8.1 - Prob. 21ECh. 8.1 - Prob. 22ECh. 8.1 - Prob. 23ECh. 8.1 - Prob. 24ECh. 8.1 - Prob. 25ECh. 8.1 - Prob. 26ECh. 8.2 - Describe a fast way to determine when three points...Ch. 8.2 - Prob. 2PPCh. 8.2 - Prob. 1ECh. 8.2 - Prob. 2ECh. 8.2 - Prob. 3ECh. 8.2 - Prob. 4ECh. 8.2 - Prob. 5ECh. 8.2 - Prob. 6ECh. 8.2 - Prob. 7ECh. 8.2 - Prob. 8ECh. 8.2 - In Exercises 9 and 10, mark each statement True or...Ch. 8.2 - a. If{v1,....,vp} is an affinely dependent set in...Ch. 8.2 - Prob. 11ECh. 8.2 - Prob. 12ECh. 8.2 - Prob. 13ECh. 8.2 - The conditions for affine dependence are stronger...Ch. 8.2 - Prob. 15ECh. 8.2 - Prob. 16ECh. 8.2 - Prob. 17ECh. 8.2 - Let T be a tetrahedron in standard position, with...Ch. 8.2 - Prob. 19ECh. 8.2 - Prob. 20ECh. 8.2 - In Exercises 21-24, a, b, and c are noncollinear...Ch. 8.2 - Prob. 22ECh. 8.2 - Prob. 23ECh. 8.2 - Prob. 24ECh. 8.2 - Prob. 25ECh. 8.2 - Prob. 26ECh. 8.3 - Prob. 1PPCh. 8.3 - Let S be the set of points on the curve y = 1/x...Ch. 8.3 - Prob. 1ECh. 8.3 - Describe the convex hull of the set S of points...Ch. 8.3 - Prob. 3ECh. 8.3 - Prob. 4ECh. 8.3 - Prob. 5ECh. 8.3 - Prob. 6ECh. 8.3 - Prob. 7ECh. 8.3 - Prob. 8ECh. 8.3 - Prob. 9ECh. 8.3 - Repeat Exercise 9 for the points q1, , q5 whose...Ch. 8.3 - Prob. 11ECh. 8.3 - In Exercises 11 and 12, mark each statement True...Ch. 8.3 - Prob. 13ECh. 8.3 - Prob. 14ECh. 8.3 - Let v1 = [10], v2 = [12], v3 = [42], v4 = [40],...Ch. 8.3 - Prob. 16ECh. 8.3 - In Exercises 17-20, prove the given statement...Ch. 8.3 - In Exercises 17-20, prove the given statement...Ch. 8.3 - Prob. 19ECh. 8.3 - Prob. 20ECh. 8.3 - Prob. 21ECh. 8.3 - Prob. 22ECh. 8.3 - Prob. 23ECh. 8.3 - Prob. 24ECh. 8.4 - Prob. 1PPCh. 8.4 - Let L be the line in 2 through the points [14] and...Ch. 8.4 - Prob. 2ECh. 8.4 - Prob. 3ECh. 8.4 - In Exercises 3 and 4, determine whether each set...Ch. 8.4 - Prob. 5ECh. 8.4 - Prob. 6ECh. 8.4 - Prob. 7ECh. 8.4 - Prob. 8ECh. 8.4 - Prob. 9ECh. 8.4 - In Exercises 7-10, let H be the hyperplane through...Ch. 8.4 - Prob. 11ECh. 8.4 - Let a1=[215], a2=[313], a3=[160], b1=[051],...Ch. 8.4 - Prob. 13ECh. 8.4 - Let F1 and F2 be 4-dimensional flats in 6, and...Ch. 8.4 - In Exercises 15-20, write a formula for a linear...Ch. 8.4 - Prob. 16ECh. 8.4 - Prob. 17ECh. 8.4 - In Exercises 15-20, write a formula for a linear...Ch. 8.4 - Prob. 19ECh. 8.4 - Prob. 20ECh. 8.4 - Prob. 21ECh. 8.4 - Prob. 22ECh. 8.4 - Prob. 23ECh. 8.4 - Prob. 24ECh. 8.4 - Let p=[41], Find a hyperplane [f : d] that...Ch. 8.4 - Let q=[23] and p=[61]. Find a hyperplane [f : d]...Ch. 8.4 - Prob. 27ECh. 8.4 - Prob. 28ECh. 8.4 - Prob. 29ECh. 8.4 - Prove that the convex hull of a bounded set is...Ch. 8.5 - Find the minimal representation of the polytope P...Ch. 8.5 - Given points p1 = [10], p2 = [23], and p3 = [12]...Ch. 8.5 - Given points p1 = [01], p2 = [21], and p3 = [12]...Ch. 8.5 - Repeat Exercise 1 where m is the minimum value of...Ch. 8.5 - Repeat Exercise 2 where m is the minimum value of...Ch. 8.5 - In Exercises 5-8, find the minimal representation...Ch. 8.5 - In Exercises 5-8, find the minimal representation...Ch. 8.5 - In Exercises 5-8, find the minimal representation...Ch. 8.5 - In Exercises 5-8, find the minimal representation...Ch. 8.5 - Let S = {(x, y) : x2 + (y 1)2 1} {(3, 0)}. Is...Ch. 8.5 - Find an example of a closed convex set S in 2 such...Ch. 8.5 - Find an example of a bounded convex set S in 2...Ch. 8.5 - a. Determine the number of k-faces of the...Ch. 8.5 - a. Determine the number of k-faces of the...Ch. 8.5 - Suppose v1, , vk are linearly independent vectors...Ch. 8.5 - A k-pyramid Pk is the convex hull of a (k ...Ch. 8.5 - Prob. 16ECh. 8.5 - In Exercises 16 and 17, mark each statement True...Ch. 8.5 - Let v be an element of the convex set S. Prove...Ch. 8.5 - If c and S is a set, define cS = {cx : x S}....Ch. 8.5 - Find an example to show that the convexity of S is...Ch. 8.5 - Prob. 21ECh. 8.5 - Prob. 22ECh. 8.6 - A spline usually refers to a curve that passes...Ch. 8.6 - Prob. 2PPCh. 8.6 - Prob. 1ECh. 8.6 - Prob. 2ECh. 8.6 - Prob. 3ECh. 8.6 - Prob. 4ECh. 8.6 - Prob. 5ECh. 8.6 - Prob. 6ECh. 8.6 - Let x(t) and y(t) be Bzier curves from Exercise 5,...Ch. 8.6 - Prob. 8ECh. 8.6 - Prob. 9ECh. 8.6 - Prob. 10ECh. 8.6 - In Exercises 11 and 12, mark each statement True...Ch. 8.6 - In Exercises 11 and 12, mark each statement True...Ch. 8.6 - Prob. 13ECh. 8.6 - Prob. 14ECh. 8.6 - Prob. 15ECh. 8.6 - Explain why a cubic Bzier curve is completely...Ch. 8.6 - TrueType fonts, created by Apple Computer and...Ch. 8.6 - Prob. 18E
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