Contemporary Mathematics for Business & Consumers
8th Edition
ISBN: 9781305886803
Author: Brechner
Publisher: Cengage
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Chapter 20, Problem 7CR
To determine
The formula used to calculate the gain (or loss) on an investment in stocks.
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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
9.7 Given the equations
0.5x₁-x2=-9.5
1.02x₁ - 2x2 = -18.8
(a) Solve graphically.
(b) Compute the determinant.
(c) On the basis of (a) and (b), what would you expect regarding
the system's condition?
(d) Solve by the elimination of unknowns.
(e) Solve again, but with a modified slightly to 0.52. Interpret
your results.
Chapter 20 Solutions
Contemporary Mathematics for Business & Consumers
Ch. 20.I - Techron Industries, Inc., has 1,400,000 shares of...Ch. 20.I - Prob. 2TIECh. 20.I - Prob. 3TIECh. 20.I - Prob. 4TIECh. 20.I - Bentley Systems. Inc., paid a dividend of $0.68...Ch. 20.I - Prob. 6TIECh. 20.I - You purchase 225 shares of Gulfstream Industries...Ch. 20.I - Prob. 1RECh. 20.I - Prob. 2RECh. 20.I - Prob. 3RE
Ch. 20.I - Prob. 4RECh. 20.I - Prob. 5RECh. 20.I - Prob. 6RECh. 20.I - Prob. 7RECh. 20.I - Prob. 8RECh. 20.I - Prob. 9RECh. 20.I - Prob. 10RECh. 20.I - Prob. 11RECh. 20.I - Prob. 12RECh. 20.I - Prob. 13RECh. 20.I - Prob. 14RECh. 20.I - Prob. 15RECh. 20.I - Prob. 16RECh. 20.I - Prob. 17RECh. 20.I - Prob. 18RECh. 20.I - Prob. 19RECh. 20.I - Calculate the total cost, proceeds, and gain (or...Ch. 20.I - Prob. 21RECh. 20.I - Prob. 22RECh. 20.I - Prob. 23RECh. 20.I - Prob. 24RECh. 20.I - Prob. 25RECh. 20.I - Prob. 26RECh. 20.I - 27. Apex Developers. Inc., has 1,800,000 shares of...Ch. 20.I - Prob. 28RECh. 20.I - 29. You purchase 650 shares of Sunrise Electric...Ch. 20.I - Though investing all at once works best when stock...Ch. 20.II - Using Exhibit 20-5. Corporate Bond Quotation...Ch. 20.II - Prob. 9TIECh. 20.II - Prob. 10TIECh. 20.II - Prob. 11TIECh. 20.II - Prob. 1RECh. 20.II - Prob. 2RECh. 20.II - Prob. 3RECh. 20.II - Prob. 4RECh. 20.II - Prob. 5RECh. 20.II - Prob. 6RECh. 20.II - Prob. 7RECh. 20.II - Prob. 8RECh. 20.II - Prob. 9RECh. 20.II - Prob. 10RECh. 20.II - Calculate the accrued interest and the total...Ch. 20.II - Calculate the accrued interest and the total...Ch. 20.II - Prob. 13RECh. 20.II - Prob. 14RECh. 20.II - Prob. 15RECh. 20.II - Prob. 16RECh. 20.II - Prob. 17RECh. 20.II - Prob. 18RECh. 20.II - Prob. 19RECh. 20.II - Prob. 20RECh. 20.II - Prob. 21RECh. 20.II - Prob. 22RECh. 20.II - Prob. 23RECh. 20.II - Prob. 24RECh. 20.II - Prob. 25RECh. 20.III - Using Exhibit 20-6, Mutual Fund Quotation Table,...Ch. 20.III - Prob. 13TIECh. 20.III - Prob. 14TIECh. 20.III - Prob. 15TIECh. 20.III - Prob. 16TIECh. 20.III - Prob. 1RECh. 20.III - Prob. 2RECh. 20.III - Prob. 3RECh. 20.III - Prob. 4RECh. 20.III - Prob. 5RECh. 20.III - Prob. 6RECh. 20.III - Prob. 7RECh. 20.III - Prob. 8RECh. 20.III - Prob. 9RECh. 20.III - Prob. 10RECh. 20.III - Prob. 11RECh. 20.III - Prob. 12RECh. 20.III - Prob. 13RECh. 20.III - Prob. 14RECh. 20.III - Prob. 15RECh. 20.III - Prob. 16RECh. 20.III - Prob. 17RECh. 20.III - Prob. 18RECh. 20.III - Prob. 19RECh. 20.III - Prob. 20RECh. 20.III - Prob. 21RECh. 20.III - Prob. 22RECh. 20.III - Calculate the total cost, proceeds, total gain (or...Ch. 20.III - Prob. 24RECh. 20.III - Prob. 25RECh. 20.III - Prob. 26RECh. 20.III - Prob. 27RECh. 20.III - Prob. 28RECh. 20.III - Prob. 29RECh. 20.III - BUSINESS DECISION: CAPITAL GAINS
30. There are...Ch. 20 - Prob. 1CRCh. 20 - Prob. 2CRCh. 20 - Prob. 3CRCh. 20 - Prob. 4CRCh. 20 - Prob. 5CRCh. 20 - Prob. 6CRCh. 20 - Prob. 7CRCh. 20 - A _____ is a loan, or an IOU, in the form of an...Ch. 20 - Prob. 9CRCh. 20 - 10. Write the formula used to calculate the...Ch. 20 - Prob. 11CRCh. 20 - Prob. 12CRCh. 20 - Prob. 13CRCh. 20 - Prob. 14CRCh. 20 - Prob. 1ATCh. 20 - Prob. 2ATCh. 20 - Prob. 3ATCh. 20 - Prob. 4ATCh. 20 - Prob. 5ATCh. 20 - Prob. 6ATCh. 20 - Prob. 7ATCh. 20 - Prob. 8ATCh. 20 - Prob. 9ATCh. 20 - Prob. 10ATCh. 20 - Prob. 11ATCh. 20 - Prob. 12ATCh. 20 - Calculate the total cost, proceeds and gain (or...Ch. 20 - Prob. 14ATCh. 20 - Prob. 15ATCh. 20 - 16. The board of directors of Micro-Fine...Ch. 20 - Prob. 17ATCh. 20 - Prob. 18ATCh. 20 - 19. You purchase 350 shares of Universal Metals...Ch. 20 - Prob. 20ATCh. 20 - Prob. 21ATCh. 20 - Prob. 22ATCh. 20 - Prob. 23ATCh. 20 - Prob. 24ATCh. 20 - Prob. 25ATCh. 20 - Calculate the accrued interest and the total...Ch. 20 - Prob. 27ATCh. 20 - Prob. 28ATCh. 20 - Prob. 29ATCh. 20 - Prob. 30ATCh. 20 - Prob. 31ATCh. 20 - Prob. 32ATCh. 20 - Prob. 33ATCh. 20 - 34. On May 1. Emerson Fast bought 10 Manitoba...Ch. 20 - Prob. 35ATCh. 20 - Prob. 36ATCh. 20 - Prob. 37ATCh. 20 - Prob. 38ATCh. 20 - Prob. 39ATCh. 20 - Prob. 40ATCh. 20 - Prob. 41ATCh. 20 - Prob. 42ATCh. 20 - Prob. 43ATCh. 20 - Prob. 44ATCh. 20 - Prob. 45ATCh. 20 - Prob. 46ATCh. 20 - Prob. 47ATCh. 20 - Prob. 48ATCh. 20 - Prob. 49AT
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