Calculus: Early Transcendentals (2nd Edition)
Calculus: Early Transcendentals (2nd Edition)
2nd Edition
ISBN: 9780321947345
Author: William L. Briggs, Lyle Cochran, Bernard Gillett
Publisher: PEARSON
bartleby

Videos

Textbook Question
Book Icon
Chapter 9.4, Problem 15E

Limits Evaluate the following limits using Taylor series.

15. lim x → 0 ln ( 1 + x ) − x + x 2 / 2 x 3

Expert Solution & Answer
Check Mark
bartleby

Trending nowThis is a popular solution!

See solution
Check out sample textbook solution
Blurred answer
Previous
Chapter 9.4, Problem 14E
Next
Chapter 9.4, Problem 16E
Students have asked these similar questions
Use series to evaluate the limit. -1x2 x - In(1 x) 2. lim x0 +3
Use series to evaluate the limits
[5] Use series to evaluate the limits of the following: (a) lim sin(h) (c) lim r sin () h0 (b) lim 1-cos(x)–

Chapter 9 Solutions

Calculus: Early Transcendentals (2nd Edition)

Ch. 9.1 - Suppose you use a second-order Taylor polynomial...Ch. 9.1 - Does the accuracy of an approximation given by a...Ch. 9.1 - The first three Taylor polynomials for f(x)=1+x...Ch. 9.1 - Prob. 4ECh. 9.1 - How is the remainder Rn(x) in a Taylor polynomial...Ch. 9.1 - Explain how to estimate the remainder in an...Ch. 9.1 - Linear and quadratic approximation a. Find the...Ch. 9.1 - Linear and quadratic approximation a. Find the...Ch. 9.1 - Linear and quadratic approximation a. Find the...Ch. 9.1 - Linear and quadratic approximation a. Find the...
Ch. 9.1 - Linear and quadratic approximation a. Find the...Ch. 9.1 - Linear and quadratic approximation a. Find the...Ch. 9.1 - Linear and quadratic approximation a. Find the...Ch. 9.1 - Linear and quadratic approximation a. Find the...Ch. 9.1 - Taylor polynomials a. Find the nth-order Taylor...Ch. 9.1 - Taylor polynomials a. Find the nth-order Taylor...Ch. 9.1 - Taylor polynomials a. Find the nth-order Taylor...Ch. 9.1 - Prob. 18ECh. 9.1 - Prob. 19ECh. 9.1 - Prob. 20ECh. 9.1 - Prob. 21ECh. 9.1 - Prob. 22ECh. 9.1 - Approximations with Taylor polynomials a. Use the...Ch. 9.1 - Prob. 24ECh. 9.1 - Prob. 25ECh. 9.1 - Approximations with Taylor polynomials a. Use the...Ch. 9.1 - Approximations with Taylor polynomials a. Use the...Ch. 9.1 - Prob. 28ECh. 9.1 - Taylor polynomials centered at a 0 a. Find the...Ch. 9.1 - Taylor polynomials centered at a 0 a. Find the...Ch. 9.1 - Prob. 31ECh. 9.1 - Prob. 32ECh. 9.1 - Prob. 33ECh. 9.1 - Prob. 34ECh. 9.1 - Prob. 35ECh. 9.1 - Prob. 36ECh. 9.1 - Prob. 37ECh. 9.1 - Prob. 38ECh. 9.1 - Approximations with Taylor polynomials a....Ch. 9.1 - Approximations with Taylor polynomials a....Ch. 9.1 - Approximations with Taylor polynomials a....Ch. 9.1 - Approximations with Taylor polynomials a....Ch. 9.1 - Approximations with Taylor polynomials a....Ch. 9.1 - Approximations with Taylor polynomials a....Ch. 9.1 - Prob. 45ECh. 9.1 - Approximations with Taylor polynomials a....Ch. 9.1 - Approximations with Taylor polynomials a....Ch. 9.1 - Prob. 48ECh. 9.1 - Remainders Find the remainder Rn for the nth-order...Ch. 9.1 - Remainders Find the remainder Rn for the nth-order...Ch. 9.1 - Prob. 51ECh. 9.1 - Remainders Find the remainder Rn for the nth-order...Ch. 9.1 - Remainders Find the remainder Rn for the nth-order...Ch. 9.1 - Remainders Find the remainder Rn for the nth-order...Ch. 9.1 - Estimating errors Use the remainder to find a...Ch. 9.1 - Estimating errors Use the remainder to find a...Ch. 9.1 - Estimating errors Use the remainder to find a...Ch. 9.1 - Estimating errors Use the remainder to find a...Ch. 9.1 - Estimating errors Use the remainder to find a...Ch. 9.1 - Estimating errors Use the remainder to find a...Ch. 9.1 - Error bounds Use the remainder to find a bound on...Ch. 9.1 - Prob. 62ECh. 9.1 - Error bounds Use the remainder to find a bound on...Ch. 9.1 - Error bounds Use the remainder to find a bound on...Ch. 9.1 - Error bounds Use the remainder to find a bound on...Ch. 9.1 - Error bounds Use the remainder to find a bound on...Ch. 9.1 - Number of terms What is the minimum order of the...Ch. 9.1 - Number of terms What is the minimum order of the...Ch. 9.1 - Number of terms What is the minimum order of the...Ch. 9.1 - Number of terms What is the minimum order of the...Ch. 9.1 - Number of terms What is the minimum order of the...Ch. 9.1 - Number of terms What is the minimum order of the...Ch. 9.1 - Explain why or why not Determine whether the...Ch. 9.1 - Prob. 74ECh. 9.1 - Matching functions with polynomials Match...Ch. 9.1 - Prob. 76ECh. 9.1 - Small argument approximations Consider the...Ch. 9.1 - Prob. 78ECh. 9.1 - Prob. 79ECh. 9.1 - Prob. 80ECh. 9.1 - Small argument approximations Consider the...Ch. 9.1 - Small argument approximations Consider the...Ch. 9.1 - Small argument approximations Consider the...Ch. 9.1 - Prob. 84ECh. 9.1 - Prob. 85ECh. 9.1 - Prob. 86ECh. 9.1 - Prob. 87ECh. 9.1 - Prob. 88ECh. 9.1 - Prob. 89ECh. 9.1 - Prob. 90ECh. 9.1 - Best expansion point Suppose you wish to...Ch. 9.1 - Prob. 92ECh. 9.1 - Tangent line is p1 Let f be differentiable at x =...Ch. 9.1 - Local extreme points and inflection points Suppose...Ch. 9.1 - Prob. 95ECh. 9.1 - Approximating In x Let f(x) = ln x and let pn and...Ch. 9.1 - Approximating square roots Let p1 and q1 be the...Ch. 9.1 - A different kind of approximation When...Ch. 9.2 - Write the first four terms of a power series with...Ch. 9.2 - Prob. 2ECh. 9.2 - What tests are used to determine the radius of...Ch. 9.2 - Prob. 4ECh. 9.2 - Do the interval and radius of convergence of a...Ch. 9.2 - Prob. 6ECh. 9.2 - Prob. 7ECh. 9.2 - Prob. 8ECh. 9.2 - Interval and radius of convergence Determine the...Ch. 9.2 - Prob. 10ECh. 9.2 - Interval and radius of convergence Determine the...Ch. 9.2 - Interval and radius of convergence Determine the...Ch. 9.2 - Interval and radius of convergence Determine the...Ch. 9.2 - Interval and radius of convergence Determine the...Ch. 9.2 - Interval and radius of convergence Determine the...Ch. 9.2 - Interval and radius of convergence Determine the...Ch. 9.2 - Interval and radius of convergence Determine the...Ch. 9.2 - Interval and radius of convergence Determine the...Ch. 9.2 - Interval and radius of convergence Determine the...Ch. 9.2 - Interval and radius of convergence Determine the...Ch. 9.2 - Interval and radius of convergence Determine the...Ch. 9.2 - Interval and radius of convergence Determine the...Ch. 9.2 - Interval and radius of convergence Determine the...Ch. 9.2 - Interval and radius of convergence Determine the...Ch. 9.2 - Interval and radius of convergence Determine the...Ch. 9.2 - Prob. 26ECh. 9.2 - Interval and radius of convergence Determine the...Ch. 9.2 - Interval and radius of convergence Determine the...Ch. 9.2 - Combining power series Use the geometric series...Ch. 9.2 - Combining power series Use the geometric series...Ch. 9.2 - Combining power series Use the geometric series...Ch. 9.2 - Combining power series Use the geometric series...Ch. 9.2 - Combining power series Use the geometric series...Ch. 9.2 - Combining power series Use the geometric series...Ch. 9.2 - Combining power series Use the power series...Ch. 9.2 - Combining power series Use the power series...Ch. 9.2 - Prob. 37ECh. 9.2 - Combining power series Use the power series...Ch. 9.2 - Combining power series Use the power series...Ch. 9.2 - Prob. 40ECh. 9.2 - Differentiating and integrating power series Find...Ch. 9.2 - Differentiating and integrating power series Find...Ch. 9.2 - Differentiating and integrating power series Find...Ch. 9.2 - Differentiating and integrating power series Find...Ch. 9.2 - Differentiating and integrating power series Find...Ch. 9.2 - Differentiating and integrating power series Find...Ch. 9.2 - Prob. 47ECh. 9.2 - Functions to power series Find power series...Ch. 9.2 - Functions to power series Find power series...Ch. 9.2 - Functions to power series Find power series...Ch. 9.2 - Functions to power series Find power series...Ch. 9.2 - Functions to power series Find power series...Ch. 9.2 - Explain why or why not Determine whether the...Ch. 9.2 - Radius of convergence Find the radius of...Ch. 9.2 - Radius of convergence Find the radius of...Ch. 9.2 - Summation notation Write the following power...Ch. 9.2 - Summation notation Write the following power...Ch. 9.2 - Prob. 58ECh. 9.2 - Prob. 59ECh. 9.2 - Scaling power series If the power series...Ch. 9.2 - Shifting power series If the power series...Ch. 9.2 - Prob. 62ECh. 9.2 - Series to functions Find the function represented...Ch. 9.2 - Series to functions Find the function represented...Ch. 9.2 - Prob. 65ECh. 9.2 - Series to functions Find the function represented...Ch. 9.2 - Series to functions Find the function represented...Ch. 9.2 - A useful substitution Replace x with x 1 in the...Ch. 9.2 - Prob. 69ECh. 9.2 - Prob. 70ECh. 9.2 - Prob. 71ECh. 9.2 - Exponential function In Section 9.3, we show that...Ch. 9.2 - Prob. 73ECh. 9.2 - Remainders Let f(x)=k=0xk=11xandSn(x)=k=0n1xk. The...Ch. 9.2 - Prob. 75ECh. 9.2 - Inverse sine Given the power series...Ch. 9.2 - Prob. 77ECh. 9.3 - How are the Taylor polynomials for a function f...Ch. 9.3 - What conditions must be satisfied by a function f...Ch. 9.3 - Prob. 3ECh. 9.3 - Prob. 4ECh. 9.3 - Prob. 5ECh. 9.3 - For what values of p does the Taylor series for...Ch. 9.3 - In terms of the remainder, what does it mean for a...Ch. 9.3 - Prob. 8ECh. 9.3 - Maclaurin series a. Find the first four nonzero...Ch. 9.3 - Maclaurin series a. Find the first four nonzero...Ch. 9.3 - Maclaurin series a. Find the first four nonzero...Ch. 9.3 - Maclaurin series a. Find the first four nonzero...Ch. 9.3 - Maclaurin series a. Find the first four nonzero...Ch. 9.3 - Prob. 14ECh. 9.3 - Maclaurin series a. Find the first four nonzero...Ch. 9.3 - Maclaurin series a. Find the first four nonzero...Ch. 9.3 - Maclaurin series a. Find the first four nonzero...Ch. 9.3 - Maclaurin series a. Find the first four nonzero...Ch. 9.3 - Prob. 19ECh. 9.3 - Maclaurin series a. Find the first four nonzero...Ch. 9.3 - Taylor series centered at a 0 a. Find the first...Ch. 9.3 - Taylor series centered at a 0 a. Find the first...Ch. 9.3 - Taylor series centered at a 0 a. Find the first...Ch. 9.3 - Taylor series centered at a 0 a. Find the first...Ch. 9.3 - Taylor series centered at a 0 a. Find the first...Ch. 9.3 - Taylor series centered at a 0 a. Find the first...Ch. 9.3 - Taylor series centered at a 0 a. Find the first...Ch. 9.3 - Prob. 28ECh. 9.3 - Prob. 29ECh. 9.3 - Prob. 30ECh. 9.3 - Prob. 31ECh. 9.3 - Prob. 32ECh. 9.3 - Prob. 33ECh. 9.3 - Prob. 34ECh. 9.3 - Prob. 35ECh. 9.3 - Prob. 36ECh. 9.3 - Prob. 37ECh. 9.3 - Prob. 38ECh. 9.3 - Binomial series a. Find the first four nonzero...Ch. 9.3 - Binomial series a. Find the first four nonzero...Ch. 9.3 - Prob. 41ECh. 9.3 - Binomial series a. Find the first four nonzero...Ch. 9.3 - Binomial series a. Find the first four nonzero...Ch. 9.3 - Binomial series a. Find the first four nonzero...Ch. 9.3 - Prob. 45ECh. 9.3 - Prob. 46ECh. 9.3 - Prob. 47ECh. 9.3 - Working with binomial series Use properties of...Ch. 9.3 - Prob. 49ECh. 9.3 - Working with binomial series Use properties of...Ch. 9.3 - Working with binomial series Use properties of...Ch. 9.3 - Working with binomial series Use properties of...Ch. 9.3 - Working with binomial series Use properties of...Ch. 9.3 - Working with binomial series Use properties of...Ch. 9.3 - Working with binomial series Use properties of...Ch. 9.3 - Working with binomial series Use properties of...Ch. 9.3 - Remainders Find the remainder in the Taylor series...Ch. 9.3 - Prob. 58ECh. 9.3 - Remainders Find the remainder in the Taylor series...Ch. 9.3 - Remainders Find the remainder in the Taylor series...Ch. 9.3 - Explain why or why not Determine whether the...Ch. 9.3 - Any method a. Use any analytical method to find...Ch. 9.3 - Any method a. Use any analytical method to find...Ch. 9.3 - Any method a. Use any analytical method to find...Ch. 9.3 - Any method a. Use any analytical method to find...Ch. 9.3 - Any method a. Use any analytical method to find...Ch. 9.3 - Any method a. Use any analytical method to find...Ch. 9.3 - Any method a. Use any analytical method to find...Ch. 9.3 - Any method a. Use any analytical method to find...Ch. 9.3 - Approximating powers Compute the coefficients for...Ch. 9.3 - Approximating powers Compute the coefficients for...Ch. 9.3 - Approximating powers Compute the coefficients for...Ch. 9.3 - Prob. 73ECh. 9.3 - Prob. 74ECh. 9.3 - Integer coefficients Show that the first five...Ch. 9.3 - Choosing a good center Suppose you want to...Ch. 9.3 - Alternative means By comparing the first four...Ch. 9.3 - Alternative means By comparing the first four...Ch. 9.3 - Prob. 79ECh. 9.3 - Prob. 80ECh. 9.3 - Prob. 81ECh. 9.3 - Composition of series Use composition of series to...Ch. 9.3 - Prob. 83ECh. 9.3 - Approximations Choose a Taylor series and center...Ch. 9.3 - Approximations Choose a Taylor series and center...Ch. 9.3 - Prob. 86ECh. 9.3 - Prob. 87ECh. 9.3 - Prob. 88ECh. 9.3 - Prob. 89ECh. 9.3 - Prob. 90ECh. 9.4 - Explain the strategy presented in this section for...Ch. 9.4 - Explain the method presented in this section for...Ch. 9.4 - How would you approximate e0.6 using the Taylor...Ch. 9.4 - Prob. 4ECh. 9.4 - Prob. 5ECh. 9.4 - What condition must be met by a function f for it...Ch. 9.4 - Limits Evaluate the following limits using Taylor...Ch. 9.4 - Limits Evaluate the following limits using Taylor...Ch. 9.4 - Limits Evaluate the following limits using Taylor...Ch. 9.4 - Limits Evaluate the following limits using Taylor...Ch. 9.4 - Limits Evaluate the following limits using Taylor...Ch. 9.4 - Limits Evaluate the following limits using Taylor...Ch. 9.4 - Limits Evaluate the following limits using Taylor...Ch. 9.4 - Limits Evaluate the following limits using Taylor...Ch. 9.4 - Limits Evaluate the following limits using Taylor...Ch. 9.4 - Limits Evaluate the following limits using Taylor...Ch. 9.4 - Limits Evaluate the following limits using Taylor...Ch. 9.4 - Limits Evaluate the following limits using Taylor...Ch. 9.4 - Limits Evaluate the following limits using Taylor...Ch. 9.4 - Limits Evaluate the following limits using Taylor...Ch. 9.4 - Limits Evaluate the following limits using Taylor...Ch. 9.4 - Limits Evaluate the following limits using Taylor...Ch. 9.4 - Limits Evaluate the following limits using Taylor...Ch. 9.4 - Limits Evaluate the following limits using Taylor...Ch. 9.4 - Power series for derivatives a. Differentiate the...Ch. 9.4 - Prob. 26ECh. 9.4 - Power series for derivatives a. Differentiate the...Ch. 9.4 - Power series for derivatives a. Differentiate the...Ch. 9.4 - Power series for derivatives a. Differentiate the...Ch. 9.4 - Power series for derivatives a. Differentiate the...Ch. 9.4 - Power series for derivatives a. Differentiate the...Ch. 9.4 - Power series for derivatives a. Differentiate the...Ch. 9.4 - Differential equations a. Find a power series for...Ch. 9.4 - Differential equations a. Find a power series for...Ch. 9.4 - Differential equations a. Find a power series for...Ch. 9.4 - Differential equations a. Find a power series for...Ch. 9.4 - Approximating definite integrals Use a Taylor...Ch. 9.4 - Approximating definite integrals Use a Taylor...Ch. 9.4 - Approximating definite integrals Use a Taylor...Ch. 9.4 - Approximating definite integrals Use a Taylor...Ch. 9.4 - Approximating definite integrals Use a Taylor...Ch. 9.4 - Approximating definite integrals Use a Taylor...Ch. 9.4 - Approximating definite integrals Use a Taylor...Ch. 9.4 - Approximating definite integrals Use a Taylor...Ch. 9.4 - Approximating real numbers Use an appropriate...Ch. 9.4 - Approximating real numbers Use an appropriate...Ch. 9.4 - Approximating real numbers Use an appropriate...Ch. 9.4 - Approximating real numbers Use an appropriate...Ch. 9.4 - Approximating real numbers Use an appropriate...Ch. 9.4 - Approximating real numbers Use an appropriate...Ch. 9.4 - Evaluating an infinite series Let f(x) = (ex ...Ch. 9.4 - Prob. 52ECh. 9.4 - Evaluating an infinite series Write the Taylor...Ch. 9.4 - Prob. 54ECh. 9.4 - Representing functions by power series Identify...Ch. 9.4 - Representing functions by power series Identify...Ch. 9.4 - Representing functions by power series Identify...Ch. 9.4 - Representing functions by power series Identify...Ch. 9.4 - Representing functions by power series Identify...Ch. 9.4 - Representing functions by power series Identify...Ch. 9.4 - Representing functions by power series Identify...Ch. 9.4 - Representing functions by power series Identify...Ch. 9.4 - Representing functions by power series Identify...Ch. 9.4 - Representing functions by power series Identify...Ch. 9.4 - Explain why or why not Determine whether the...Ch. 9.4 - Limits with a parameter Use Taylor series to...Ch. 9.4 - Limits with a parameter Use Taylor series to...Ch. 9.4 - Limits with a parameter Use Taylor series to...Ch. 9.4 - A limit by Taylor series Use Taylor series to...Ch. 9.4 - Prob. 70ECh. 9.4 - Prob. 71ECh. 9.4 - Prob. 72ECh. 9.4 - Prob. 73ECh. 9.4 - Prob. 74ECh. 9.4 - Prob. 75ECh. 9.4 - Prob. 76ECh. 9.4 - Elliptic integrals The period of a pendulum is...Ch. 9.4 - Prob. 78ECh. 9.4 - Fresnel integrals The theory of optics gives rise...Ch. 9.4 - Error function An essential function in statistics...Ch. 9.4 - Prob. 81ECh. 9.4 - Prob. 82ECh. 9.4 - Prob. 83ECh. 9.4 - Prob. 84ECh. 9.4 - Prob. 85ECh. 9 - Explain why or why not Determine whether the...Ch. 9 - Prob. 2RECh. 9 - Prob. 3RECh. 9 - Prob. 4RECh. 9 - Prob. 5RECh. 9 - Prob. 6RECh. 9 - Prob. 7RECh. 9 - Prob. 8RECh. 9 - Prob. 9RECh. 9 - Prob. 10RECh. 9 - Prob. 11RECh. 9 - Prob. 12RECh. 9 - Approximations a. Find the Taylor polynomials of...Ch. 9 - Estimating remainders Find the remainder term...Ch. 9 - Estimating remainders Find the remainder term...Ch. 9 - Estimating remainders Find the remainder term...Ch. 9 - Prob. 17RECh. 9 - Prob. 18RECh. 9 - Prob. 19RECh. 9 - Prob. 20RECh. 9 - Prob. 21RECh. 9 - Prob. 22RECh. 9 - Prob. 23RECh. 9 - Prob. 24RECh. 9 - Power series from the geometric series Use the...Ch. 9 - Power series from the geometric series Use the...Ch. 9 - Power series from the geometric series Use the...Ch. 9 - Prob. 28RECh. 9 - Prob. 29RECh. 9 - Power series from the geometric series Use the...Ch. 9 - Taylor series Write out the first three nonzero...Ch. 9 - Prob. 32RECh. 9 - Taylor series Write out the first three nonzero...Ch. 9 - Taylor series Write out the first three nonzero...Ch. 9 - Taylor series Write out the first three nonzero...Ch. 9 - Taylor series Write out the first three nonzero...Ch. 9 - Prob. 37RECh. 9 - Prob. 38RECh. 9 - Prob. 39RECh. 9 - Prob. 40RECh. 9 - Binomial series Write out the first three terms of...Ch. 9 - Prob. 42RECh. 9 - Prob. 43RECh. 9 - Prob. 44RECh. 9 - Convergence Write the remainder term Rn(x) for the...Ch. 9 - Prob. 46RECh. 9 - Limits by power series Use Taylor series to...Ch. 9 - Limits by power series Use Taylor series to...Ch. 9 - Limits by power series Use Taylor series to...Ch. 9 - Limits by power series Use Taylor series to...Ch. 9 - Limits by power series Use Taylor series to...Ch. 9 - Prob. 52RECh. 9 - Definite integrals by power series Use a Taylor...Ch. 9 - Prob. 54RECh. 9 - Definite integrals by power series Use a Taylor...Ch. 9 - Prob. 56RECh. 9 - Approximating real numbers Use an appropriate...Ch. 9 - Prob. 58RECh. 9 - Approximating real numbers Use an appropriate...Ch. 9 - Prob. 60RECh. 9 - Prob. 61RECh. 9 - Prob. 62RECh. 9 - Prob. 63RECh. 9 - Graphing Taylor polynomials Consider the function...

Additional Math Textbook Solutions

Find more solutions based on key concepts
The intercepts of the equation 9 x 2 +4y=36 are ______. (pp.18-19)

Precalculus (10th Edition)

Evaluate the cylindrical coordinate integrals in Exercises 23−28. 23.

University Calculus: Early Transcendentals (4th Edition)

Precalculus Enhanced with Graphing Utilities

The probability that the wait time is at most 2 min. if the wait time t, in minutes, between customers at Teri’...

Calculus and Its Applications (11th Edition)

If f(x)={2x+4if3x1x31if1x5 find : f(2) (b) f(0) (c) f(1) (d) f(3)

Precalculus

In Example 1, what is the average velocity between t=2 and t=3? Example 1 Average Velocity A rock is launched v...

Calculus, Single Variable: Early Transcendentals (3rd Edition)

Knowledge Booster
Background pattern image
Calculus
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, calculus and related others by exploring similar questions and additional content below.
Similar questions
Recommended textbooks for you
Text book image
Algebra & Trigonometry with Analytic Geometry
Algebra
ISBN:9781133382119
Author:Swokowski
Publisher:Cengage
Text book image
College Algebra
Algebra
ISBN:9781305115545
Author:James Stewart, Lothar Redlin, Saleem Watson
Publisher:Cengage Learning
SEE MORE TEXTBOOKS
Power Series; Author: Professor Dave Explains;https://www.youtube.com/watch?v=OxVBT83x8oc;License: Standard YouTube License, CC-BY
Power Series & Intervals of Convergence; Author: Dr. Trefor Bazett;https://www.youtube.com/watch?v=XHoRBh4hQNU;License: Standard YouTube License, CC-BY