Differential Equations and Linear Algebra (4th Edition)
4th Edition
ISBN: 9780321964670
Author: Stephen W. Goode, Scott A. Annin
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Concept explainers
Textbook Question
Chapter 10.9, Problem 13P
Problems
For Problems 10-14, determine
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionStudents have asked these similar questions
I don't understand how to go about solving this problem. Please help me with a step by step on how to solve a problem like this.
a. If y = 1000(2-0.1x ), find the value of y whenx = 10.b. Use graphical or numerical methods to determine the value of x that gives y = 250 if y =1000(2-0.1x ).
Find the domain and range of
W=1/x+y
Chapter 10 Solutions
Differential Equations and Linear Algebra (4th Edition)
Ch. 10.1 - For Questions a-i, decide if the given statement...Ch. 10.1 - For Questions a-i, decide if the given statement...Ch. 10.1 - For Questions a-i, decide if the given statement...Ch. 10.1 - For Questions a-i, decide if the given statement...Ch. 10.1 - For Questions a-i, decide if the given statement...Ch. 10.1 - For Questions a-i, decide if the given statement...Ch. 10.1 - Prob. 7TFRCh. 10.1 - For Questions a-i, decide if the given statement...Ch. 10.1 - For Questions a-i, decide if the given statement...Ch. 10.1 - Problems For Problems 1-12, use 10.1.1 to...
Ch. 10.1 - Problems For Problems 1-12, use 10.1.1 to...Ch. 10.1 - Problems For Problems 1-12, use 10.1.1 to...Ch. 10.1 - Problems For Problems 1-12, use 10.1.1 to...Ch. 10.1 - Problems For Problems 1-12, use 10.1.1 to...Ch. 10.1 - Prob. 6PCh. 10.1 - Problems For Problems 1-12, use 10.1.1 to...Ch. 10.1 - Prob. 8PCh. 10.1 - Problems For Problems 1-12, use 10.1.1 to...Ch. 10.1 - Prob. 10PCh. 10.1 - Problems For Problems 1-12, use 10.1.1 to...Ch. 10.1 - Prob. 12PCh. 10.1 - Problems For Problems 13-22, use the linearity of...Ch. 10.1 - Prob. 14PCh. 10.1 - Problems For Problems 13-22, use the linearity of...Ch. 10.1 - PROBLEMNS For Problems 13-22, use the linearity of...Ch. 10.1 - Prob. 17PCh. 10.1 - PROBLEMNS For Problems 13-22, use the linearity of...Ch. 10.1 - PROBLEMNS For Problems 13-22, use the linearity of...Ch. 10.1 - PROBLEMNS For Problems 13-22, use the linearity of...Ch. 10.1 - PROBLEMNS For Problems 13-22, use the linearity of...Ch. 10.1 - PROBLEMNS For Problems 13-22, use the linearity of...Ch. 10.1 - PROBLEMNS For Problems 23-30, sketch the given...Ch. 10.1 - Prob. 24PCh. 10.1 - PROBLEMNS For Problems 23-30, sketch the given...Ch. 10.1 - Prob. 26PCh. 10.1 - For Problems 23-30, sketch the given function and...Ch. 10.1 - For Problems 23-30, sketch the given function and...Ch. 10.1 - For Problems 23-30, sketch the given function and...Ch. 10.1 - For Problems 23-30, sketch the given function and...Ch. 10.1 - For Problems 31-34, sketch the given function and...Ch. 10.1 - For Problems 31-34, sketch the given function and...Ch. 10.1 - For Problems 31-34, sketch the given function and...Ch. 10.1 - Prob. 34PCh. 10.1 - Prob. 35PCh. 10.1 - Prob. 36PCh. 10.1 - Use mathematical induction to prove that for every...Ch. 10.1 - Prob. 38PCh. 10.2 - True-False Review For Questions (a)-(f) decide if...Ch. 10.2 - True-False Review For Questions (a)-(f) decide if...Ch. 10.2 - Prob. 3TFRCh. 10.2 - Prob. 4TFRCh. 10.2 - Prob. 5TFRCh. 10.2 - Prob. 6TFRCh. 10.2 - Prob. 1PCh. 10.2 - Prob. 2PCh. 10.2 - Prob. 3PCh. 10.2 - Prob. 4PCh. 10.2 - For Problem 1-5, show that the given function is...Ch. 10.2 - Prob. 6PCh. 10.2 - Prob. 7PCh. 10.2 - For Problem 7-21, determine the inverse Laplace...Ch. 10.2 - For Problem 7-21, determine the inverse Laplace...Ch. 10.2 - For Problem 7-21, determine the inverse Laplace...Ch. 10.2 - For Problem 7-21, determine the inverse Laplace...Ch. 10.2 - For Problem 7-21, determine the inverse Laplace...Ch. 10.2 - For Problem 7-21, determine the inverse Laplace...Ch. 10.2 - Prob. 14PCh. 10.2 - For Problem 7-21, determine the inverse Laplace...Ch. 10.2 - Prob. 16PCh. 10.2 - For Problem 7-21, determine the inverse Laplace...Ch. 10.2 - For Problem 7-21, determine the inverse Laplace...Ch. 10.2 - For Problem 7-21, determine the inverse Laplace...Ch. 10.2 - For Problem 7-21, determine the inverse Laplace...Ch. 10.2 - Problems For Problem 7-21, determine the inverse...Ch. 10.2 - Prob. 22PCh. 10.3 - For Questions (a)-(h) decide if the given...Ch. 10.3 - Prob. 2TFRCh. 10.3 - Prob. 3TFRCh. 10.3 - Prob. 4TFRCh. 10.3 - Prob. 5TFRCh. 10.3 - Prob. 6TFRCh. 10.3 - True-False Review For Questions (a)-(h) decide if...Ch. 10.3 - Problems For Problems 1-9, determine the Laplace...Ch. 10.3 - Prob. 2PCh. 10.3 - Problems For Problem 1-9, determine the Laplace...Ch. 10.3 - Prob. 4PCh. 10.3 - Problems For Problem 1-9, determine the Laplace...Ch. 10.3 - Prob. 6PCh. 10.3 - Problems For Problem 1-9, determine the Laplace...Ch. 10.3 - Prob. 8PCh. 10.3 - Problems For Problem 1-9, determine the Laplace...Ch. 10.3 - Prob. 10PCh. 10.3 - Prob. 11PCh. 10.4 - For Questions a-d, decide if the given statement...Ch. 10.4 - Prob. 2TFRCh. 10.4 - Prob. 3TFRCh. 10.4 - Prob. 4TFRCh. 10.4 - Problems For problem 1-27, use the Laplace...Ch. 10.4 - Problems For problems 1-27, use the Laplace...Ch. 10.4 - Problems For problem 1-27, use the Laplace...Ch. 10.4 - Problems For problem 1-27, use the Laplace...Ch. 10.4 - Problems For problem 1-27, use the Laplace...Ch. 10.4 - Prob. 6PCh. 10.4 - Problems For problem 1-27, use the Laplace...Ch. 10.4 - Problems For problem 1-27, use the Laplace...Ch. 10.4 - Problems For problem 1-27, use the Laplace...Ch. 10.4 - Problems For problem 1-27, use the Laplace...Ch. 10.4 - Problems For problem 1-27, use the Laplace...Ch. 10.4 - Problems For problem 1-27, use the Laplace...Ch. 10.4 - Problems For problems 1-27, use the Laplace...Ch. 10.4 - Prob. 14PCh. 10.4 - Problems For problem 1-27, use the Laplace...Ch. 10.4 - Problems For problem 1-27, use the Laplace...Ch. 10.4 - Problems For problem 1-27, use the Laplace...Ch. 10.4 - Problems For problem 1-27, use the Laplace...Ch. 10.4 - Prob. 19PCh. 10.4 - Problems For problem 1-27, use the Laplace...Ch. 10.4 - Prob. 21PCh. 10.4 - Prob. 22PCh. 10.4 - Prob. 23PCh. 10.4 - Prob. 24PCh. 10.4 - Problems For problem 1-27, use the Laplace...Ch. 10.4 - Prob. 26PCh. 10.4 - Problems For problem 1-27, use the Laplace...Ch. 10.4 - Prob. 28PCh. 10.4 - Prob. 29PCh. 10.4 - Prob. 30PCh. 10.4 - Prob. 31PCh. 10.4 - Prob. 32PCh. 10.4 - Prob. 34PCh. 10.5 - True-False Review For Questions (a)(h), decide if...Ch. 10.5 - Prob. 2TFRCh. 10.5 - True-False Review For Questions (a)(h), decide if...Ch. 10.5 - Prob. 4TFRCh. 10.5 - Prob. 5TFRCh. 10.5 - Prob. 6TFRCh. 10.5 - Prob. 7TFRCh. 10.5 - Prob. 8TFRCh. 10.5 - For Problems 1-11, determine f(ta) for the given...Ch. 10.5 - Prob. 2PCh. 10.5 - Prob. 3PCh. 10.5 - Prob. 4PCh. 10.5 - For Problems 1-11, determine f(ta) for the given...Ch. 10.5 - Prob. 6PCh. 10.5 - Prob. 7PCh. 10.5 - Prob. 8PCh. 10.5 - Prob. 9PCh. 10.5 - Prob. 10PCh. 10.5 - Prob. 11PCh. 10.5 - Prob. 12PCh. 10.5 - For Problems 12-17, determine f(t). f(t1)=(t2)2.Ch. 10.5 - Prob. 14PCh. 10.5 - For Problems 12-17, determine f(t)....Ch. 10.5 - Prob. 16PCh. 10.5 - Prob. 17PCh. 10.5 - For Problems 18-27, determine the Laplace...Ch. 10.5 - For Problems 18-27, determine the Laplace...Ch. 10.5 - For Problems 18-27, determine the Laplace...Ch. 10.5 - For Problems 18-27, determine the Laplace...Ch. 10.5 - For Problems 18-27, determine the Laplace...Ch. 10.5 - Prob. 23PCh. 10.5 - For Problems 18-27, determine the Laplace...Ch. 10.5 - For Problems 18-27, determine the Laplace...Ch. 10.5 - Prob. 26PCh. 10.5 - For Problems 18-27, determine the Laplace...Ch. 10.5 - Prob. 28PCh. 10.5 - For Problems 28-42, determine L1[F]. F(s)=4(s+2)3.Ch. 10.5 - Prob. 30PCh. 10.5 - For Problems 28-42, determine L1[F]....Ch. 10.5 - Prob. 32PCh. 10.5 - For Problems 28-42, determine L1[F]....Ch. 10.5 - Prob. 34PCh. 10.5 - Prob. 35PCh. 10.5 - Prob. 36PCh. 10.5 - For Problems 28-42, determine L1[F]....Ch. 10.5 - Prob. 38PCh. 10.5 - For Problems 28-42, determine L1[F]....Ch. 10.5 - Prob. 40PCh. 10.5 - For Problems 28-42, determine L1[F]....Ch. 10.5 - Prob. 42PCh. 10.5 - For Problems 43-53, solve the given initial-value...Ch. 10.5 - Prob. 44PCh. 10.5 - For Problems 43-53, solve the given initial-value...Ch. 10.5 - Prob. 46PCh. 10.5 - For Problems 43-53, solve the given initial-value...Ch. 10.5 - For Problems 43-53, solve the given initial-value...Ch. 10.5 - For Problems 43-53, solve the given initial-value...Ch. 10.5 - Prob. 50PCh. 10.5 - Prob. 51PCh. 10.5 - For Problems 43-53, solve the given initial-value...Ch. 10.5 - For Problems 43-53, solve the given initial-value...Ch. 10.5 - Prob. 54PCh. 10.5 - Prob. 55PCh. 10.6 - For Questions a-d, decide if the given statement...Ch. 10.6 - For Questions a-d, decide if the given statement...Ch. 10.6 - Prob. 3TFRCh. 10.6 - Prob. 4TFRCh. 10.6 - Problems: For Problems 1-7, make a sketch of the...Ch. 10.6 - Problems: For Problems 1-7, make a sketch of the...Ch. 10.6 - Problems: For Problems 1-7, make a sketch of the...Ch. 10.6 - Problems: For Problems 1-7, make a sketch of the...Ch. 10.6 - Problems: For Problems 1-7, make a sketch of the...Ch. 10.6 - Prob. 6PCh. 10.6 - Prob. 7PCh. 10.6 - Problems: For Problems 8-15, make a sketch of the...Ch. 10.6 - Problems: For Problems 8-15, make a sketch of the...Ch. 10.6 - Problems: For Problems 8-15, make a sketch of the...Ch. 10.6 - Problems: For Problems 8-15, make a sketch of the...Ch. 10.6 - Problems: For Problems 8-15, make a sketch of the...Ch. 10.6 - Problems: For Problems 8-15, make a sketch of the...Ch. 10.6 - Problems: For Problems 8-15, make a sketch of the...Ch. 10.6 - Prob. 15PCh. 10.7 - True-False Review For Questions (a)(g), decide if...Ch. 10.7 - Prob. 2TFRCh. 10.7 - Prob. 3TFRCh. 10.7 - Prob. 4TFRCh. 10.7 - Prob. 5TFRCh. 10.7 - Prob. 7TFRCh. 10.7 - Problems
For Problems 1-11, determine the...Ch. 10.7 - Problems
For Problems 1-11, determine the...Ch. 10.7 - Problems
For Problems 1-11, determine the...Ch. 10.7 - Problems
For Problems 1-11, determine the...Ch. 10.7 - Problems
For Problems 1-11, determine the...Ch. 10.7 - Problems
For Problems 1-11, determine the...Ch. 10.7 - Problems
For Problems 1-11, determine the...Ch. 10.7 - Problems
For Problems 1-11, determine the...Ch. 10.7 - Problems
For Problems 1-11, determine the...Ch. 10.7 - Prob. 10PCh. 10.7 - Problems
For Problems 1-11, determine the...Ch. 10.7 - Problems
For Problems 12-26, determine the...Ch. 10.7 - Problems
For Problems 12-26, determine the...Ch. 10.7 - Prob. 14PCh. 10.7 - Problems
For Problems 12-26, determine the...Ch. 10.7 - Prob. 16PCh. 10.7 - Problems
For Problems 12-26, determine the...Ch. 10.7 - Prob. 18PCh. 10.7 - Problems
For Problems 12-26, determine the...Ch. 10.7 - Prob. 20PCh. 10.7 - Problems
For Problems 12-26, determine the...Ch. 10.7 - Prob. 22PCh. 10.7 - Prob. 23PCh. 10.7 - Prob. 24PCh. 10.7 - Problems
For Problems 12-26, determine the...Ch. 10.7 - Prob. 26PCh. 10.7 - For Problems 27-41, solve the given initial-value...Ch. 10.7 - Prob. 28PCh. 10.7 - Prob. 29PCh. 10.7 - Prob. 30PCh. 10.7 - Prob. 31PCh. 10.7 - Problems For Problems 27-41, solve the given...Ch. 10.7 - For Problems 27-41, solve the given initial-value...Ch. 10.7 - For Problems 27-41, solve the given initial-value...Ch. 10.7 - For Problems 27-41, solve the given initial-value...Ch. 10.7 - Prob. 36PCh. 10.7 - Prob. 37PCh. 10.7 - Problems For Problems 27-41, solve the given...Ch. 10.7 - Prob. 39PCh. 10.7 - Problems For Problems 27-41, solve the given...Ch. 10.7 - Prob. 41PCh. 10.7 - Problems For Problems 42-45, solve the given...Ch. 10.7 - For Problems 4245, solve the given initial value...Ch. 10.7 - Prob. 48PCh. 10.8 - For Questions a-d, decide if the given statement...Ch. 10.8 - For Questions a-d, decide if the given statement...Ch. 10.8 - Prob. 3TFRCh. 10.8 - Prob. 4TFRCh. 10.8 - Prob. 5TFRCh. 10.8 - For Problem 1-13, solve the given initial value...Ch. 10.8 - For Problem 1-13, solve the given initial value...Ch. 10.8 - For Problem 1-13, solve the given initial value...Ch. 10.8 - Prob. 4PCh. 10.8 - For Problem 1-13, solve the given initial value...Ch. 10.8 - Prob. 6PCh. 10.8 - For Problem 1-13, solve the given initial value...Ch. 10.8 - Prob. 8PCh. 10.8 - For Problem 1-13, solve the given initial value...Ch. 10.8 - Prob. 10PCh. 10.8 - Prob. 11PCh. 10.8 - Prob. 12PCh. 10.8 - For Problems 1-13, solve the given initial value...Ch. 10.8 - The motion of a spring-mass system is governed by...Ch. 10.8 - Prob. 15PCh. 10.8 - Prob. 16PCh. 10.9 - True-False Review For Questions (a)(g), decide if...Ch. 10.9 - Prob. 2TFRCh. 10.9 - True-False Review For Questions (a)(g), decide if...Ch. 10.9 - True-False Review For Questions (a)(g), decide if...Ch. 10.9 - Prob. 6TFRCh. 10.9 - Prob. 7TFRCh. 10.9 - Problems For Problems 1-6, determine fg. f(t)=t,...Ch. 10.9 - Problems For Problems 1-6, determine fg. f(t)=6t2,...Ch. 10.9 - Prob. 3PCh. 10.9 - Problems For Problems 1-6, determine fg. f(t)=et,...Ch. 10.9 - Problems For Problems 1-6, determine fg. f(t)=t2,...Ch. 10.9 - Problems For Problems 1-6, determine fg. f(t)=et,...Ch. 10.9 - Problems Prove that fg=gf.Ch. 10.9 - Problems Prove that f(gh)=(fg)h.Ch. 10.9 - Problems Prove that f(g+h)=(fg)+(fh).Ch. 10.9 - Problems For Problems 10-14, determine L(fg)....Ch. 10.9 - Problems For Problems 10-14, determine L(fg)....Ch. 10.9 - Problems For Problems 10-14, determine L(fg)....Ch. 10.9 - Problems For Problems 10-14, determine L(fg)....Ch. 10.9 - Prob. 14PCh. 10.9 - Problems For Problems 15-20, determine...Ch. 10.9 - Problems For Problems 15-20, determine...Ch. 10.9 - Prob. 17PCh. 10.9 - Prob. 18PCh. 10.9 - Prob. 19PCh. 10.9 - Prob. 21PCh. 10.9 - Problems For Problems 21-25, express L1[F(s)G(s)]...Ch. 10.9 - Problems For Problems 21-25, express L1[F(s)G(s)]...Ch. 10.9 - Prob. 24PCh. 10.9 - Problems For Problems 21-25, express L1[F(s)G(s)]...Ch. 10.9 - Prob. 26PCh. 10.9 - Problems Problems 26-32, solve the given...Ch. 10.9 - Problems Problems 26-32, solve the given...Ch. 10.9 - Problems Problems 26-32, solve the given...Ch. 10.9 - Problems Problems 26-32, solve the given...Ch. 10.9 - Prob. 31PCh. 10.9 - Prob. 32PCh. 10.9 - Prob. 33PCh. 10.9 - Prob. 34PCh. 10.9 - Prob. 35PCh. 10.9 - Prob. 36PCh. 10.9 - Prob. 37PCh. 10.9 - Prob. 38PCh. 10.9 - Prob. 39PCh. 10.10 - Prob. 1APCh. 10.10 - Prob. 2APCh. 10.10 - Prob. 3APCh. 10.10 - Prob. 4APCh. 10.10 - Prob. 5APCh. 10.10 - Prob. 7APCh. 10.10 - Prob. 8APCh. 10.10 - Prob. 9APCh. 10.10 - Prob. 10APCh. 10.10 - For Problems 11-19, use properties of the Laplace...Ch. 10.10 - Prob. 12APCh. 10.10 - Prob. 13APCh. 10.10 - Prob. 14APCh. 10.10 - For Problems 11-19, use properties of the Laplace...Ch. 10.10 - Prob. 16APCh. 10.10 - Prob. 17APCh. 10.10 - Prob. 18APCh. 10.10 - Prob. 19APCh. 10.10 - Prob. 20APCh. 10.10 - For Problems 20-25, determine a function f(t) that...Ch. 10.10 - For problems 20-25, determine a function f(t) that...Ch. 10.10 - For problems 20-25, determine a function f(t) that...Ch. 10.10 - For problems 20-25, determine a function f(t) that...Ch. 10.10 - For problems 20-25, determine a function f(t) that...Ch. 10.10 - Prob. 26APCh. 10.10 - For Problems 26-28, sketch f(t), express f(t) in...Ch. 10.10 - For Problems 26-28, sketch f(t), express f(t) in...Ch. 10.10 - Prob. 29APCh. 10.10 - Prob. 30APCh. 10.10 - Prob. 31APCh. 10.10 - Let y(t) be the solution to the initial-value...Ch. 10.10 - Show that the general solution to the...Ch. 10.10 - For Problems 34-40, use the Laplace transform to...Ch. 10.10 - For Problems 34-40, use the Laplace transform to...Ch. 10.10 - For Problems 34-40, use the Laplace transform to...Ch. 10.10 - For Problems 34-40, use the Laplace transform to...Ch. 10.10 - For Problems 34-40, use the Laplace transform to...Ch. 10.10 - Prob. 39APCh. 10.10 - For Problems 34-40, use the Laplace transform to...Ch. 10.10 - For Problems 41-44, use the Laplace transform to...Ch. 10.10 - For Problems 41-44, use the Laplace transform to...Ch. 10.10 - For Problems 41-44, use the Laplace transform to...Ch. 10.10 - For Problems 41-44, use the Laplace transform to...Ch. 10.10 - Prob. 45APCh. 10.10 - Prob. 46APCh. 10.10 - For Problems 45-48, use the Laplace transform to...Ch. 10.10 - Prob. 48AP
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, algebra and related others by exploring similar questions and additional content below.Similar questions
- I only need 4 through 8 answeredarrow_forwardq.1arrow_forward4. For f(x) = x+ 1 and g(x) = 2x + 2, find the following functions. a. (fo g)(x); b. (g o f)(x); c. (fo g)(2); d. (go f)(2) a. (fo g)(x) = (Simplify your answer.) b. (go f)(x) = (Simplify your answer.) c. (fo g)(2) = d. (go f)(2) =arrow_forward
- A 3 th B. 4 C. 5 D. 7 37. If f(-2) = 16, which could be the equation for f(x)? %3D A. f(x) = x - 18 В. Лх) %3D20-2r C. x) = 3x + 24 D. x) = 8 – 4x 39. What are the range values of the function f(x) = -3x2 + 5 for the domain values 2011 %3Darrow_forward23. For f(x) = 9x and g(x)=x + 4, find the following functions. a. (fo g)(x); b. (g o f)(x); c. (f o g)(2); d. (g o f)(2) a. (fo g)(x) = (Simplify your answer.) b. (g o f)(x) = (Simplify your answer.) c. (f o g)(2) = d. (g o f)(2) =arrow_forwardFind a possible formula for the function in the figurearrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- Algebra for College StudentsAlgebraISBN:9781285195780Author:Jerome E. Kaufmann, Karen L. SchwittersPublisher:Cengage LearningGlencoe Algebra 1, Student Edition, 9780079039897...AlgebraISBN:9780079039897Author:CarterPublisher:McGraw HillAlgebra & Trigonometry with Analytic GeometryAlgebraISBN:9781133382119Author:SwokowskiPublisher:Cengage
- Algebra: Structure And Method, Book 1AlgebraISBN:9780395977224Author:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. ColePublisher:McDougal LittellElementary AlgebraAlgebraISBN:9780998625713Author:Lynn Marecek, MaryAnne Anthony-SmithPublisher:OpenStax - Rice University
Algebra for College Students
Algebra
ISBN:9781285195780
Author:Jerome E. Kaufmann, Karen L. Schwitters
Publisher:Cengage Learning
Glencoe Algebra 1, Student Edition, 9780079039897...
Algebra
ISBN:9780079039897
Author:Carter
Publisher:McGraw Hill
Algebra & Trigonometry with Analytic Geometry
Algebra
ISBN:9781133382119
Author:Swokowski
Publisher:Cengage
Algebra: Structure And Method, Book 1
Algebra
ISBN:9780395977224
Author:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. Cole
Publisher:McDougal Littell
Elementary Algebra
Algebra
ISBN:9780998625713
Author:Lynn Marecek, MaryAnne Anthony-Smith
Publisher:OpenStax - Rice University
Inverse Functions; Author: Professor Dave Explains;https://www.youtube.com/watch?v=9fJsrnE1go0;License: Standard YouTube License, CC-BY