In this video I go over another example on integrating rational functions through the method of partial fractions and this time integrate the function (x^2+2x-1)/(2x^3+3x^2-2x). This requires using partial fraction decomposition and break down the rational function into simpler partial fractions which we know the integral of. Also in this video I allude to a theorem about inputting values even if the overall function is not defined for those variables. This theorem is actually a corollary to the continuity theorem and I will prove this in my next video so stay tuned for that!
In this video I quickly recap on absolutely and conditionally convergent series. An absolutely convergent series is such that the absolute value of all the terms of a series is convergent. Since the absolute value of all the terms means that the series sums up to its maximum size, if it is absolutely convergent then it means it is also convergent. On the other hand, if a series is convergent but NOT absolutely convergent, then it is said to be conditionally convergent. This arises from positive and negative terms canceling out.
The timestamps of key parts of the video are listed below:
- Question 6: 0:00
- (a) Absolutely convergent series: 0:14
- (b) Absolutely convergent series are convergent: 0:56
- (c) Conditionally convergent series: 1:12
This video was taken from my earlier video listed below:
- Infinite Sequences and Series: Review and True-False Quiz: https://youtu.be/F0dsQLdXXpI
- HIVE video notes: https://peakd.com/hive-128780/@mes/infinite-sequences-and-series-review-and-true-false-quiz
- Video sections playlist: https://www.youtube.com/playlist?list=PLai3U8-WIK0FCqXVJv1r7eJvrvphfkr6L
Related Videos:
Sequences and Series playlist: https://www.youtube.com/playlist?list=PLai3U8-WIK0FjJpwnxwdrOR7L8Ul8VZoZ .
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https://www.youtube.com/watch?v=xL8C5edXS-A
In this video I go over further into applications of integrals in physics and engineering, and this time go over an introduction to moments and centers of mass. The center of mass is defined as the point at which keeps all the weights on a surface balance. The moment is defined as the multiplication of the mass with the distance to a point a given point, such as the fulcrum or origin of the axes. In this video I illustrate how the center of mass is simply the summation of the moments of all the masses divided by the total mass. This can also be interpreted as the point at which a mass equal to the total combined masses is balanced, and has a moment that equals the total combined moments. This is a very important concept to understand because it is used throughout engineering and physics so make sure to watch this introduction video! In later videos I will go over some useful examples illustrating how to apply integrals in solving for the centers of mass so stay tuned!
Download the notes in my video: https://onedrive.live.com/redir?resid=88862EF47BCAF6CD!104530&authkey=!AMa-2IWZKhZZspY&ithint=file%2cpdf
View Video Notes on Steemit: https://steemit.com/mathematics/@mes/applications-of-integrals-moments-and-centers-of-mass-introduction
Related Videos:
Hydrostatic Pressure and Force: Example 2: Force on a Drum: https://youtu.be/8tZ86Iw68l8
Hydrostatic Pressure and Force: Example 1: Force on a Dam: https://youtu.be/Gr5H4icS4CQ
Applications of Integrals: Hydrostatic Pressure and Force: https://youtu.be/fesMt6vmXIo
Applications of Integrals: Surface Area: https://youtu.be/JkDPmAD37qk
Applications of Integrals: Arc Length Function: https://youtu.be/MWKK3qLvSwU
Applications of Integrals: Arc Length Proof: https://youtu.be/2rb4H_rmgxg
Simplified Filter Criteria: A Dam Filter Example: http://youtu.be/yGEeYAb4Olw
Soil Mechanics 101 - Phase Relations: http://youtu.be/DtKheQcL2BU
Types of Tailings Embankments: Upstream, Downstream and Centerline Construction Methods: http://youtu.be/1wm1XR6z-QE
Buoyancy - What is Archimedes' Principle and it's Proof: http://youtu.be/mXzccaH2KNI .
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https://www.youtube.com/watch?v=lLSo5Hck6FM
In this video I determine the limit that the area of an infinite number of circles that can be packed inside an equilateral triangle. I represent this area as a ratio of the area of the circles divided by the area of the triangle. To solve this problem, I first determine an expression for the radius of the circles in terms of the length of the triangle. I then count up the number of circles, and determine the equation of the area of n circles. Then, I plug in the length of the triangle as a function of the triangle's area. This then obtains a division of the area of the circles divided by the area of the triangles. Taking the limit as n, the number of rows of circles, approaches infinity, we then obtain the limit we were asked to find. Truly amazing stuff!
The timestamps of key parts of the video are listed below:
- Problem 15: Packing infinite circles inside an equilateral triangle: 0:00
- Solution: Area of an Equilateral Triangle: 1:24
- Area of the circles: 4:34
- Length in terms of 4 radii: 8:48
- Length in terms of n radii: 10:16
- Solving for radius in terms of the length: 13:06
- Counting the number of circles: 13:44
- Total area of the circles: 15:20
- Limit of area of circles divided by area of triangle: 20:02
This video was taken from my earlier video listed below:
- Infinite Sequences and Series: Problems Plus: https://youtu.be/zjdkQIIdTbg
- HIVE video notes: https://peakd.com/hive-128780/@mes/infinite-sequences-and-series-problems-plus
- Video sections playlist: https://www.youtube.com/playlist?list=PLai3U8-WIK0FQ96Egr5R7fZGeDTIUKz8P
Related Videos:
Sequences and Series playlist: https://www.youtube.com/playlist?list=PLai3U8-WIK0EXHAJ3vRg0T_kKEyPah1Lz .
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https://www.youtube.com/watch?v=oY-aDi1ARgw
In this video I recap on my earlier videos on the two parts of the Fundamental Theorem and summarize the theorem as well as provide a brief history lesson on the importance of the theorem as being one of the greatest inventions of the human mind!
Download the notes in my video: https://www.dropbox.com/s/9sqiwivfmcyqmnw/231%20-%20Fundamental%20Theorem%20of%20Calculus%20Recap.pdf
Related Videos:
Fundamental Theorem of Calculus - Introduction and Part 1 of the Theorem: http://youtu.be/3o8Q6UJzJyk
Fundamental Theorem of Calculus - Intro and Proof of Part 2 of the Theorem: http://youtu.be/yuIl-BPQHss .
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https://www.youtube.com/watch?v=CD7-PFg7omc
In this video I go over the trig product identities and provide a simple proof for them. The identities I cover are listed below:
sin(x)cos(y) = 1/2 [sin(x+y) + sin(x-y)]
cos(x)cos(y) = 1/2[cos(x+y) + cos(x-y)]
sin(x)sin(y) = 1/2[cos(x-y) - cos(x+y)]
In proving the above identities I make use of the identities which I covered in my earlier video (see the related videos below), specifically the identities for sin(x+/-y) and cos(x+/-y).
Download the notes in my video: http://1drv.ms/1DZu6XH
View Video Notes on Steemit: https://steemit.com/mathematics/@mes/trigonometry-product-identities
Related Videos:
Trigonometry Identities: cos(x +/- y) = cos(x)cos(y) -/+ sin(x)sin(y) : http://youtu.be/VuQczhk7HOs
Trigonometry Identities: sin(x +/- y) = sin(x)cos(y) +/- cos(x)sin(y): http://youtu.be/edtk9thfwbM
Trigonometry Identities: cos(2π + x), sin(2π + x), cos(π/2 -x), sin(π/2 -x): http://youtu.be/EynSefQs308
Half Angle Trigonometry Identities: http://youtu.be/0bY6tHZhBSI .
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https://www.youtube.com/watch?v=os8XKWAj9P8
While I was writing my thesis I had to make an Appendix so I read up on making automated Appendix and it helped a lot especially when writing a huge report. In this video I go over the simple steps in making custom automated appendix headings. If you are writing a paper that requires an Appendix make sure to watch this video!
Download the notes in my video: https://www.dropbox.com/s/koyr716n39x8n8w/369%20-%20Appendix%20in%20Microsoft%20Word.docx
Related Videos:
Numbered Headings and Automated Table of Contents - Office Word 2007: http://youtu.be/e00xCQ0MClg
Can't copy and paste hyperlinks to Office Word?? Try Closing Internet Explorer: http://youtu.be/FczySOM59VQ
Showing Heading Levels in Table of Contents - Office Word 2007: http://youtu.be/psGZmT1mHzE .
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https://www.youtube.com/watch?v=5ohONwESuLo
In this video I go over a useful four-step strategy of integration. This strategy requires understanding and memorization of the basic integration formulas as well as understanding the various integration techniques. In this video I go over ways in selecting the proper integration techniques to use for any given integral and also show how sometimes the most useful method is to simply try random techniques in hopes that the solution will be more recognizable. Also, when stuck in any given integral it is important to try different techniques again as often times multiple techniques or even combination of integration techniques are required for integrating the integral.
Download the notes in my video: https://1drv.ms/b/s!As32ynv0LoaIhd0cEFHu_w5Go4MFSw
View Video Notes on Steemit: https://steemit.com/mathematics/@mes/strategy-for-integration
Related Videos:
Integration by Partial Fractions: http://youtu.be/r07NnKf76og
Trigonometric Substitution for Integrals: http://youtu.be/2pWvGXwtVJo
Integration by Parts: Proof: http://youtu.be/TZhEOct5u_M
The Substitution Rule for Integrals: http://youtu.be/VsLC-0g6hVg .
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https://www.youtube.com/watch?v=7JxW2N7izF0
In this video I go over Question 1 of the Laboratory Project: Putting 3D in Perspective and this time determine the points at which a 3D line needs to be clipped before it is projected onto a 2D screen. To do this, I first obtain the equations of the 4 clipping planes which project from the point of view of the camera or eyes and unto the vertices of the projected screen. Then we can plug in the equation of the 3D line into each linear equation of the planes and obtain points at which the line and planes intersect. Graphing this out in the amazing GeoGebra 3D graphing calculator, it becomes clear that the line only needs to be clipped at the left and top clipping planes. This is an important exercise in the mathematics of projecting 3D images onto 2D screens, which are used throughout computer graphics programming.
Here is a link to GeoGebra if you want to play around with the projection: https://www.geogebra.org/calculator/twezjbu5
The timestamps of key parts of the video are listed below:
- Laboratory Project: Putting 3D in Perspective: 0:00
- Question 1: Clipping a 3D Line: 2:08
- Solution: Graphing out the question in GeoGebra: 2:38
- We need 4 clipping planes: 4:35
- Recap on the equations of lines and planes: 6:58
- Vector and Parametric Equations of the 3D line: 8:17
- Equation of the right clipping plane: 12:21
- Note on simplified vectors: 21:49
- Linear equation of the right clipping plane: 22:49
- Plugging in equation of a line into the equation of a plane: 24:30
- Plotting our right clipping plane in GeoGebra: 30:49
- Equation of the top clipping plane: 32:47
- Plugging in equation of a line into the equation of a plane: 40:46
- Equation of the left clipping plane: 47:13
- Plugging in L into the plane equation: 50:42
- Equation of the bottom clipping plane: 58:52
- Plugging in L into the plane equation: 1:01:04
- Summary: Line is clipped at left and top clipping planes: 1:03:08
This video was taken from my earlier video listed below:
- Laboratory Project: Putting 3D in Perspective: https://youtu.be/3txedAqdtkQ
- HIVE video notes: https://peakd.com/hive-128780/@mes/laboratory-project-putting-3d-in-perspective
- Video sections playlist: https://www.youtube.com/playlist?list=PLai3U8-WIK0ElsrMs_IBprUoHocIwyAmK
Related Videos:
Sequences and Series playlist: https://www.youtube.com/playlist?list=PLai3U8-WIK0FjJpwnxwdrOR7L8Ul8VZoZ .
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In this video I go over Question 6 of the Laboratory Project: Taylor Polynomials and this time look at an example on how to apply Taylor Polynomials to approximate the function f(x) = cos(x) centered at x = a = 0. This example involves determining the 8th degree polynomial and comparing it graphically with the 2nd, 4th, and 6th degree approximations. The first step in solving for the 8th degree Taylor Approximation is to take the derivatives up to the 8th derivative and solve each one for when x = a = 0. Doing so we can clearly see a pattern since the derivatives of cos(x) involve alternating sin(x) and cos(x) functions but with varying positive or negative signs. Since sin(0) = 0, I show that the odd terms, given the first term is considered even or zero, all vanish thus greatly simplifying the final formula. The 2nd, 4th, and 6th Taylor Approximations are all simply determined from the 8th degree Taylor Approximation since each successive iteration just adds a new term to the formula. Graphing the approximations all together with the function f(x) = cos(x) and centered about x = a = 0, I show that the approximations gets better and better for each successive iteration especially as the interval gets larger and larger. This is a very careful and detailed video showing how to approach and apply Taylor Polynomials in approximating a given function, so make sure to watch this video!
Download the notes in my video: https://1drv.ms/b/s!As32ynv0LoaIh49wGMItOOnDiBSnBg
#HIVE video notes: https://peakd.com/mathematics/@mes/laboratory-project-taylor-polynomials-question-6-example
Related Videos:
Laboratory Project: Taylor Polynomials: Question 5: Proof: https://youtu.be/KjhQfwx6Jzw
Laboratory Project: Taylor Polynomials: Question 4: Approximating Square Roots: https://youtu.be/IFtudCiIe5s
Laboratory Project: Taylor Polynomials: Question 3: (x - a) Approximation Form: https://youtu.be/V_u_SHVbTdc
Laboratory Project: Taylor Polynomials: Question 2: Approximation Accuracy: https://youtu.be/MRSs0Qofd_M
Laboratory Project: Taylor Polynomials: Question 1: Quadratic Approximation: https://youtu.be/8bpF3vccvEU .
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