Using and Understanding Mathematics: A Quantitative Reasoning Approach (6th Edition)
6th Edition
ISBN: 9780321914620
Author: Jeffrey O. Bennett, William L. Briggs
Publisher: PEARSON
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Textbook Question
Chapter 11.C, Problem 3E
What evidence suggests that the golden ratio and golden rectangle hold particular beauty?
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This question builds on an earlier problem. The randomized numbers may have changed, but have your work for the previous problem available to help with this one.
A 4-centimeter rod is attached at one end to a point A rotating counterclockwise on a wheel of radius 2 cm. The other end B is free to move back and forth along a horizontal bar that goes through the center of the wheel. At time t=0 the rod is situated as in the diagram at the left below. The
wheel rotates counterclockwise at 1.5 rev/sec. At some point, the rod will be tangent to the circle as shown in the third picture.
A
B
A
B
at some instant, the piston will be tangent to the circle
(a) Express the x and y coordinates of point A as functions of t:
x= 2 cos(3πt)
and y= 2 sin(3t)
(b) Write a formula for the slope of the tangent line to the circle at the point A at time t seconds:
-cot(3πt)
sin(3лt)
(c) Express the x-coordinate of the right end of the rod at point B as a function of t: 2 cos(3πt) +411-
4
-2 sin (3лt)
(d)…
5. [-/1 Points]
DETAILS
MY NOTES
SESSCALCET2 6.5.AE.003.
y
y= ex²
0
Video Example
x
EXAMPLE 3
(a) Use the Midpoint Rule with n = 10 to approximate the integral
कर
L'ex²
dx.
(b) Give an upper bound for the error involved in this approximation.
SOLUTION
8+2
1
L'ex² d
(a) Since a = 0, b = 1, and n = 10, the Midpoint Rule gives the following. (Round your answer to six decimal places.)
dx Ax[f(0.05) + f(0.15) + ... + f(0.85) + f(0.95)]
0.1 [0.0025 +0.0225
+
+ e0.0625 + 0.1225
e0.3025 + e0.4225
+ e0.2025
+
+ e0.5625 €0.7225 +0.9025]
The figure illustrates this approximation.
(b) Since f(x) = ex², we have f'(x)
=
0 ≤ f'(x) =
< 6e.
ASK YOUR TEACHER
and f'(x) =
Also, since 0 ≤ x ≤ 1 we have x² ≤
and so
Taking K = 6e, a = 0, b = 1, and n = 10 in the error estimate, we see that an upper bound for the error is as follows. (Round your final
answer to five decimal places.)
6e(1)3
e
24(
=
≈
1. Consider the following preference ballots:
Number of voters
Rankings 6 5 4 2
1st choice A DCB
DC
2nd choice B B D
3rd choice DCBD
4th choice CA
AAA
For each of the four voting systems we have studied, determine who would win the election
in each case. (Remember: For plurality with runoff, all but the top two vote-getters are
simultaneously eliminated at the end of round 1.)
Chapter 11 Solutions
Using and Understanding Mathematics: A Quantitative Reasoning Approach (6th Edition)
Ch. 11.A - Prob. 1QQCh. 11.A - Prob. 2QQCh. 11.A - Prob. 3QQCh. 11.A - Prob. 4QQCh. 11.A - Prob. 5QQCh. 11.A - Prob. 6QQCh. 11.A - Prob. 7QQCh. 11.A - Prob. 8QQCh. 11.A - Prob. 9QQCh. 11.A - Prob. 10QQ
Ch. 11.A - Prob. 1ECh. 11.A - 2. Define fundamental frequency, harmonic, and...Ch. 11.A - 3. What is a 12-tone scale? How are the...Ch. 11.A - 4. Explain how the notes of the scale are...Ch. 11.A - Prob. 5ECh. 11.A - Prob. 6ECh. 11.A - Prob. 7ECh. 11.A - Prob. 8ECh. 11.A - Prob. 9ECh. 11.A - Prob. 10ECh. 11.A - Prob. 11ECh. 11.A - Prob. 12ECh. 11.A - Octaves. Starting with a tone having a frequency...Ch. 11.A - Notes of a Scale. Find the frequencies of the 12...Ch. 11.A - Prob. 15ECh. 11.A - 16. The Dilemma of Temperament. Start at middle A,...Ch. 11.A - Exponential Growth and Scales. Starting at middle...Ch. 11.A - 18. Exponential Growth and Scales. Starting at...Ch. 11.A - 19. Exponential Decay and Scales. What is the...Ch. 11.A - Prob. 20ECh. 11.A - Prob. 21ECh. 11.A - Prob. 22ECh. 11.A - Mathematics and Music. Visit a website devoted to...Ch. 11.A - Mathematics and Composers. Many musical composers,...Ch. 11.A - Prob. 25ECh. 11.A - Prob. 26ECh. 11.A - Digital Processing. A variety of apps and software...Ch. 11.A - Prob. 28ECh. 11.B - Prob. 1QQCh. 11.B - 2. All lines that are parallel in a real scene...Ch. 11.B - 3. The Last Supper in Figure 11.6. Which of the...Ch. 11.B - Prob. 4QQCh. 11.B - Prob. 5QQCh. 11.B - Prob. 6QQCh. 11.B - Prob. 7QQCh. 11.B - Prob. 8QQCh. 11.B - Prob. 9QQCh. 11.B - Prob. 10QQCh. 11.B - Prob. 1ECh. 11.B - Prob. 2ECh. 11.B - Prob. 3ECh. 11.B - Prob. 4ECh. 11.B - Prob. 5ECh. 11.B - 6. Briefly explain why there are only three...Ch. 11.B - 7. Briefly explain why more tilings are possible...Ch. 11.B - 8. What is the difference between periodic and...Ch. 11.B - Prob. 9ECh. 11.B - Prob. 10ECh. 11.B - Prob. 11ECh. 11.B - Prob. 12ECh. 11.B - Prob. 13ECh. 11.B - Prob. 14ECh. 11.B - Vanishing Points. Consider the simple drawing of a...Ch. 11.B - Correct Perspective. Consider the two boxes shown...Ch. 11.B - Drawing with Perspective. Make the square, circle,...Ch. 11.B - Drawing MATH with Perspective. Make the letters M,...Ch. 11.B - 19. The drawing in Figure 11.34 shows two poles...Ch. 11.B - Two Vanishing Points. Figure 11.35 shows a road...Ch. 11.B - Prob. 21ECh. 11.B - Prob. 22ECh. 11.B - Prob. 23ECh. 11.B - Prob. 24ECh. 11.B - Prob. 25ECh. 11.B - Prob. 26ECh. 11.B - Prob. 27ECh. 11.B - Prob. 28ECh. 11.B - Prob. 29ECh. 11.B - Prob. 30ECh. 11.B - 30-31 : Tilings from Translating and Reflecting...Ch. 11.B - 32-33: Tilings from Quadrilaterals. Make a tiling...Ch. 11.B - Tilings from Quadrilaterals. Make a tiling from...Ch. 11.B - Prob. 34ECh. 11.B - Prob. 35ECh. 11.B - Prob. 36ECh. 11.B - Prob. 37ECh. 11.B - Prob. 38ECh. 11.B - Art and Mathematics. Visit a website devoted to...Ch. 11.B - 40. Art Museums. Choose an art museum, and study...Ch. 11.B - Prob. 41ECh. 11.B - Penrose Tilings. Learn more about the nature and...Ch. 11.B - Prob. 43ECh. 11.C - Prob. 1QQCh. 11.C - 2. Which of the following is not a characteristic...Ch. 11.C - 3. If a 1-foot line segment is divided according...Ch. 11.C - 4. To make a golden rectangle, you should
a. a...Ch. 11.C - Prob. 5QQCh. 11.C - Prob. 6QQCh. 11.C - Suppose you start with a golden rectangle and cut...Ch. 11.C - Prob. 8QQCh. 11.C - Prob. 9QQCh. 11.C - Prob. 10QQCh. 11.C - Prob. 1ECh. 11.C - How is a golden rectangle formed?Ch. 11.C - What evidence suggests that the golden ratio and...Ch. 11.C - Prob. 4ECh. 11.C - 5. What is the Fibonacci sequence?
Ch. 11.C - 6. What is the connection between the Fibonacci...Ch. 11.C - 7. Maria cut her 4-foot walking stick into two...Ch. 11.C - Prob. 8ECh. 11.C - Prob. 9ECh. 11.C - Prob. 10ECh. 11.C - Prob. 11ECh. 11.C - Prob. 12ECh. 11.C - Prob. 13ECh. 11.C - Prob. 14ECh. 11.C - Prob. 15ECh. 11.C - Prob. 16ECh. 11.C - Prob. 17ECh. 11.C - 18. Everyday Golden Rectangles. Find at least...Ch. 11.C - 19. Finding . The property that defines the golden...Ch. 11.C - 20. Properties of
a. Enter into your calculator....Ch. 11.C - Prob. 21ECh. 11.C - The Lucas Sequence. A sequence called the Lucas...Ch. 11.C - Prob. 23ECh. 11.C - The Golden Navel. An Old theory claims that, on...Ch. 11.C - Prob. 25ECh. 11.C - Prob. 26ECh. 11.C - Prob. 27ECh. 11.C - Prob. 28ECh. 11.C - Golden Controversies. Many websites are devoted to...Ch. 11.C - 30. Fibonacci Numbers. Learn more about Fibonacci...
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