Basic College Mathematics With Early Integers
3rd Edition
ISBN: 9780133864717
Author: Martin-Gay, K. Elayn
Publisher: Pearson,
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Chapter C, Problem 48E
To determine
The number of people who listen to country music only.
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- Suppose that you have the differential equation:
dy
= (y - 2) (y+3)
dx
a. What are the equilibrium solutions for the differential equation?
b. Where is the differential equation increasing or decreasing? Show how you know.
Showing them on the drawing is not enough.
c. Where are the changes in concavity for the differential equation? Show how you
know. Showing them on the drawing is not enough.
d. Consider the slope field for the differential equation. Draw solution curves given the
following initial conditions:
i. y(0) = -5
ii. y(0) = -1
iii. y(0) = 2
5. Suppose that a mass of 5 stretches a spring 10. The mass is acted on by an external force
of F(t)=10 sin () and moves in a medium that gives a damping coefficient of ½. If the mass
is set in motion with an initial velocity of 3 and is stretched initially to a length of 5. (I
purposefully removed the units- don't worry about them. Assume no conversions are
needed.)
a) Find the equation for the displacement of the spring mass at time t.
b) Write the equation for the displacement of the spring mass in phase-mode form.
c) Characterize the damping of the spring mass system as overdamped, underdamped or
critically damped. Explain how you know.
D.E. for Spring Mass Systems
k
m* g = kLo
y" +—y' + — —±y = —±F(t), y(0) = yo, y'(0) = vo
m
2
A₁ = √c₁² + C₂²
Q = tan-1
4. Given the following information determine the appropriate trial solution to find yp. Do not
solve the differential equation. Do not find the constants.
a) (D-4)2(D+ 2)y = 4e-2x
b) (D+ 1)(D² + 10D +34)y = 2e-5x cos 3x
Chapter C Solutions
Basic College Mathematics With Early Integers
Ch. C - Prob. 1PCh. C - Prob. 2PCh. C - Prob. 3PCh. C - Prob. 4PCh. C - Prob. 5PCh. C - Prob. 6PCh. C - Prob. 1ECh. C - Prob. 2ECh. C - Prob. 3ECh. C - Prob. 4E
Ch. C - Prob. 5ECh. C - Prob. 6ECh. C - Prob. 7ECh. C - Prob. 8ECh. C - Prob. 9ECh. C - Prob. 10ECh. C - Prob. 11ECh. C - Prob. 12ECh. C - Prob. 13ECh. C - Prob. 14ECh. C - Prob. 15ECh. C - Prob. 16ECh. C - Prob. 17ECh. C - Prob. 18ECh. C - Prob. 19ECh. C - Prob. 20ECh. C - Prob. 21ECh. C - Prob. 22ECh. C - Prob. 23ECh. C - Prob. 24ECh. C - Prob. 25ECh. C - Prob. 26ECh. C - Prob. 27ECh. C - Prob. 28ECh. C - Prob. 29ECh. C - Prob. 30ECh. C - Prob. 31ECh. C - Prob. 32ECh. C - Prob. 33ECh. C - Prob. 34ECh. C - Prob. 35ECh. C - Prob. 36ECh. C - Prob. 37ECh. C - Prob. 38ECh. C - Prob. 39ECh. C - Prob. 40ECh. C - Prob. 41ECh. C - Prob. 42ECh. C - Prob. 43ECh. C - Prob. 44ECh. C - Use diagrams and deductive reasoning to solve each...Ch. C - Prob. 46ECh. C - Prob. 47ECh. C - Prob. 48ECh. C - Prob. 49ECh. C - Prob. 50ECh. C - Prob. 51ECh. C - Prob. 52ECh. C - Prob. 53ECh. C - Prob. 54ECh. C - Prob. 1PFECh. C - Prob. 2PFECh. C - Prob. 3PFECh. C - Prob. 4PFECh. C - Prob. 5PFECh. C - Simplify by performing the indicated...Ch. C - Prob. 7PFECh. C - Prob. 8PFECh. C - Prob. 9PFECh. C - Prob. 10PFECh. C - Prob. 11PFECh. C - Prob. 12PFECh. C - Prob. 13PFECh. C - Prob. 14PFECh. C - Prob. 15PFECh. C - Note: Exercises 1–41 review operations with...Ch. C - Note: Exercises 1–41 review operations with...Ch. C - Prob. 18PFECh. C - Prob. 19PFECh. C - Prob. 20PFECh. C - Prob. 21PFECh. C - Prob. 22PFECh. C - Prob. 23PFECh. C - Prob. 24PFECh. C - Prob. 25PFECh. C - Prob. 26PFECh. C - Prob. 27PFECh. C - Prob. 28PFECh. C - Prob. 29PFECh. C - Prob. 30PFECh. C - Prob. 31PFECh. C - Prob. 32PFECh. C - Prob. 33PFECh. C - Prob. 34PFECh. C - Prob. 35PFECh. C - Prob. 36PFECh. C - Prob. 37PFECh. C - Prob. 38PFECh. C - Prob. 39PFECh. C - Prob. 40PFECh. C - Prob. 41PFECh. C - Prob. 42PFECh. C - Prob. 43PFECh. C - Prob. 44PFECh. C - Prob. 45PFECh. C - Prob. 46PFECh. C - Prob. 47PFECh. C - Prob. 48PFECh. C - Prob. 49PFECh. C - Prob. 50PFECh. C - Prob. 51PFE
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