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Math for Thought
Canada
Приєднався 7 кві 2020
Hi there!
Throughout much of my undergrad I struggled, especially at the beginning, with math. Often much of my troubles arose from subpar teaching and explanations of key concepts throughout various subjects. And while I'm not a mathematician nor a math major (in fact, I'm an electrical engineer!), this is my way of helping students or anyone curious with fundamental university-level math!
Currently I have finished my Calculus I and II video series and plan to do Linear algebra next!
Credit to Jayden for the channel banner, channel profile picture, and the video thumbnails!
Throughout much of my undergrad I struggled, especially at the beginning, with math. Often much of my troubles arose from subpar teaching and explanations of key concepts throughout various subjects. And while I'm not a mathematician nor a math major (in fact, I'm an electrical engineer!), this is my way of helping students or anyone curious with fundamental university-level math!
Currently I have finished my Calculus I and II video series and plan to do Linear algebra next!
Credit to Jayden for the channel banner, channel profile picture, and the video thumbnails!
Linear Algebra Final exam review: Part 2
The second part of the linear algebra review! We continue from question 21 onwards.
00:00 - Question 21 (Subspaces with linear combinations)
03:33 - Question 22 (Finding what is and isn't a subspace)
15:59 - Question 23 (Checking if a set of vectors forms a basis)
19:45 - Question 24 (Transformation of polynomials)
25:00 - Question 25 (Basis for the span of vectors)
27:02 - Question 26 (Row space, column space, null space, Rank and nullity)
33:39 - Question 27 (Row space with transposes)
35:58 - Question 28 (Dimension and subspaces with the Rank nullity theorem)
39:48 - Question 29 (Gram schmidt and orthogonal decomposition)
57:00 - Question 30 (Orthogonal complement with row space)
1:00:57 - Question 31 (Transition matrix + Coordinates)
1:04:21 - Question 32 (Orthonormal vectors with linear transformations)
1:25:55 - Question 33 (Linear transformation of orthogonal projection)
1:32:40 - Question 34 (Vector closest to row space)
1:37:24 - Question 35 (Rotations and isometries)
1:39:25 - Question 36 (Complex eigen values + Diagonalization to find large matrices)
1:59:53 - Question 37 (Definition of eigenvectors and eigenvalues)
2:02:10 - Question 38 (Diagonalizing a matrix)
2:11:33 - Question 39 (Orthogonal Diagonalization of a matrix + Eigenvalue properties)
2:25:32 - Question 40 (Determinants using eigenvalues)
00:00 - Question 21 (Subspaces with linear combinations)
03:33 - Question 22 (Finding what is and isn't a subspace)
15:59 - Question 23 (Checking if a set of vectors forms a basis)
19:45 - Question 24 (Transformation of polynomials)
25:00 - Question 25 (Basis for the span of vectors)
27:02 - Question 26 (Row space, column space, null space, Rank and nullity)
33:39 - Question 27 (Row space with transposes)
35:58 - Question 28 (Dimension and subspaces with the Rank nullity theorem)
39:48 - Question 29 (Gram schmidt and orthogonal decomposition)
57:00 - Question 30 (Orthogonal complement with row space)
1:00:57 - Question 31 (Transition matrix + Coordinates)
1:04:21 - Question 32 (Orthonormal vectors with linear transformations)
1:25:55 - Question 33 (Linear transformation of orthogonal projection)
1:32:40 - Question 34 (Vector closest to row space)
1:37:24 - Question 35 (Rotations and isometries)
1:39:25 - Question 36 (Complex eigen values + Diagonalization to find large matrices)
1:59:53 - Question 37 (Definition of eigenvectors and eigenvalues)
2:02:10 - Question 38 (Diagonalizing a matrix)
2:11:33 - Question 39 (Orthogonal Diagonalization of a matrix + Eigenvalue properties)
2:25:32 - Question 40 (Determinants using eigenvalues)
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Відео
Linear Algebra Final exam review: Part 1
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Welcome to to calculus II final exam review! In this video, we go over a standard final exam review for Linear algebra. Feel free to use the timestamps to go the question you wish! Please not that because the exam review is so large, it has been split into two parts. 00:00 - Introduction 01:02 - Question 1 (Elementary row operations) 11:47 - Question 2 (The inverse of a matrix) 17:48 - Question...
Calculus II: Final exam review!
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Welcome to to calculus II final exam review! In this video, we go over a standard final exam review for Calculus II. Feel free to use the timestamps to go the question you wish! 00:00 - Introduction 01:26 - Question 1 (Radius and interval of convergence) 13:24 - Question 2 (Radius and interval of convergence) 18:24 - Question 3 (Integration as a power series) 23:25 - Question 4 (Power series re...
Calculus II: Unit Tangent, Unit normal and Binormal vectors
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In this video, we close off the last topic in Calculus II by discussing the last topic, which is the idea of Unit tangent, Normal and the Bi-normal vectors. We also discuss Osculating and normal planes. 00:00 - Introduction 00:45 - Definition 03:40 - Example 1 14:14 - Normal and osculating planes
Calculus II: Curvature
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In this video, we discuss the notion of curvature and how it relates to other topics we learned about in Calculus 1 regarding rate of change. 00:00 - Introduction 00:19 - Definition of Curvature 01:40 - Calculating Curvature 03:14 - Example 1 09:49 - Alternative method for calculating Curvature 11:01 - Example 2
Calculus II: Surface of revolution
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In this video, we discuss how to compute the surface area of a curve rotated about a line. 00:00 - Introduction 00:18 - Definition 00:56 - Surface area about x and y axis 03:35 - Example 1 06:29 - Surface area involving parametric equations 08:05 - Example 2
Calculus II: Arc length of a curve
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In this video, we discuss how to find the arc length of a cartesian curve, a parametric curve, and a polar curve. 00:00 - Introduction 00:18 - Arc length of a Cartesian curve 01:50 - Example 1 04:53 - Arc length of a Parametric curve 06:05 - Example 2 08:40 - Arc length of a Polar curve 09:30 - Example 3 23:35 - Arc length of a Space curve 24:55 - Example 4 30:38 - Example 5
Calculus II: Limits, derivatives and Integrals of Vector functions
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In this video, we discuss how to find limits, derivatives and integrals of vector valued functions in space. 00:00 - Introduction 00:30 - Limits of vector valued functions 01:47 - Example 1 02:59 - Derivatives of vector valued functions 06:58 - Integration of vector valued functions 08:03 - Example 2 10:43 - Example 3 12:45 - Example 4 14:31 - Example 5
Calculus II: Parametrization of surfaces
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In this video, we extend our understanding of space curves and discuss hot do describe equations of various quadric functions with vectors. 00:00 - Introduction 00:50 - Example 1 03:28 - Example 2 14:29 - Example 3 16:47 - Example 4 18:57 - Example 5
Calculus II: Vector functions and space curves
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In this very brief video, we introduce the idea of a vector valued function and space curves and discuss finding domains of space curves. 00:00 - Introduction 00:38 - Definition of vector functions and space curves 02:55 - Example 1 04:56 - Example 2
Calculus II: Cylindrical and Spherical coordinates
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In this video, we discuss cylindrical and Spherical coordinates which can be useful on occasion when working with different coordinate systems to approach different kinds of problems. 00:00 - Introduction 00:12 - Definition of Cylindrical and Spherical coordinates 13:53 - Example 1 15:32 - Example 2 18:19 - Example 3 19:21 - Example 4 23:48 - Example 5 27:37 - Example 6 30:22 - Example 7 37:19 ...
Linear algebra: Basis and dimension
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In this video we talk about what a basis is, what it means for something to be a basis and how to find a basis for some vector space. 00:00 - Introduction 00:20 - Definition of a basis (With a example to explain) 03:19 - How to check if something is a basis 04:14 - Example 1 12:38 - Example 2 16:38 - Common basis vectors for a vector space 19:35 - Definition of dimension 20:47 - Dimension of si...
Calculus II: Cylinders and quadric surfaces
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In this video, we discuss cylinders in 3D space and the idea of quadric surfaces. imgur.com/a/Y8BzdAj (Link to Quadric surfaces) 00:00 - Introduction 00:17 - Definition of quadric surfaces 02:39 - List of quadric surfaces and equations of quadric surfaces 05:35 - Definition of a trace 10:23 - Example 1 16:57 - Example 2 29:28 - Example 3 32:28 - Example 4
Calculus II: Equations of lines and planes
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In this video, we discuss the first part of vector calculus by prefacing the idea of how to get equations of lines and planes in 3 dimensions using vectors. We also do many examples on how to use lines and planes. 00:00 - Introduction 00:59 - Equation of a lines and various forms of a line 09:00 - Example 1 13:11 - Equation of a plane 21:08 - Distance between a point and a plane 22:54 - Example...
Calculus II: Integration over polar curves
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In this video, we discuss how to find the region bounded by polar curves. We also cover several examples on how to find the area bounded by a polar curve. 00:00 - Introduction 00:18 - Area bounded by a polar curve 02:54 - Example 1 06:29 - Example 2 12:07 - Example 3 19:37 - Example 4 26:04 - Example 5
Calculus II: Tangents to Polar curves
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Calculus II: Tangents to Polar curves
Calculus II: Integration over parametric curves
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Calculus II: Integration over parametric curves
Calculus II: Tangents to parametric curves
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Calculus II: Tangents to parametric curves
Linear Algebra: Linear Independence
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Linear Algebra: Linear Independence
Linear Algebra: Geometry with determinants
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Linear Algebra: Geometry with determinants
Calculus II: Taylor and Maclaurin series
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Calculus II: Taylor and Maclaurin series
Linear Algebra: Determinants and orientated volume
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Linear Algebra: Determinants and orientated volume
Quite a nice way you have explained Asymptotes using the concepts of calculus, aka limits, which, surprisingly covers Asymptotes beyond the usual and more simpler Rational Functions. In the last example, finding 'm'' can be done WITHOUT multiplying the conjugate, as the numerator and denominator both have 'x' as the common factor, that cancel our, and then taking the limit as x--->- infinity gets the same answer. One last question - what will be the Slant Asymptote when the degree of the numerator differs from that of the denominator Polynomial function by say 2. The 'asyptote' if you can still call that, will be a parabola. Can you make a video with such a case?
at 5:11 ithink the factoring was wrong , beacause (-3) + 1 doesnt equal 5
A good one!
🎉🎉
For example 4, can you choose to get rid of the fraction by muktiplying each term by (x-2) and go on from there? i did that and it seemed so much easier, however, the answers would be different from yours. am i wrong?
You forgot to add where F'(x) DNE, which is at 0. The point at which x=0 is the actual local minimum!
great video except for that blue color
THANKS
Thanks you! I’m enjoying these videos very much!
Ex 1 is interesting … you could calculate the area from t=0 to t=pi using the same formula, but multiplying by 2, as this only calculates the area of the top half of the ellipse. Or, calculate the area of the bottom half of the ellipse between t=pi to t=2pi, and doubling that result. Then, x values increase from negative to positive, so you don’t need the negative sign outside the integral. However, the area would be negative because it’s in the negative (y<0) half of the coordinate system. So, the provided formula works for an entire revolution of t, with the negative sign applying correctly for all values of t! I hope I have that right!
watch three times but still understand nothing about the last example hope i dont get that kind of question on my exam🥲🥲🥲🥲🥲🥲🥲🥲🥲🥲🥲🥲🥲
For example 4, the direction of the curve wasn’t shown. I think, as t increases, the logarithm increases, so the curve should be marked as moving in the positive x direction, yes?
What a teacher , u r the goattt ❤
golden channel decent proof
In Example 4, I see a possible very minor simplification : (-1)^(n-6) can be expressed as (-1)^n , as the alternation between -1 and 1 remains the same. Sorry for these little points; I’m greatly enjoying this refresher for me, just encountering your terrific videos years after they were published!
A minor correction (I think) with example 3: you stated that 1/(1+x^2) = 1/(1-[-x]^2) . I think that should read 1/(1+x^2) = 1/(1-[-(x^2)])
Thanks for these videos! For example 2, can we tidy up the final result by changing the summation terms by starting at n=1 (instead of n=0), thereby changing each of the powers from (n+1) to just n?
Professor Math for Thought, thank you for the Calculus Two final exam review, however, part of your Playlist goes into Calculus Three problem selection. I have tutored Calculus Two and students struggle with Calculus Two. Instead of Calculus Three problems, there are many more topics in Calculus Two that could be covered in your lengthy Playlist.
Example 3, 21:35 first line should have a positive 3/4
13:20 why use squeeze theorem and not (sinx)/x = 1 law. I multiply top and bottom by (1/x) and get that the limit is 1
Thank you .. really helpful ❤
Sharp!!!!
why did we take the test values for the quadratic at minute 20:07 , but not for the quadratic at minute 5:24?
also in the last example, isn't it supposed to be x≤-a or x≥a rule that we use, as the absolute value of x is greater than 2, and not less than?
In Ex 2, you mentioned cos(n) > 0. I thought “why can’t cos^2(n) = 0 as well, in which case we should say that n/( n^2 - n ) is >= n/(n^2) , not > . However, I realised this is because n is a natural number and cos^2(x) is zero only when x is a multiple of pi.
love you my guy... thank you
How come in example two when you are dividing by theta cubed, why can u not split it into theta squared / theta squared and multiply that by sin(6 theta ) / theta? I tried it and i got a different answer so why would it be different(unless i just did the question wrong asw)?
Who is here in 2024
you make these concepts easy for normal people to understand. god bless dude you've got crazy talent
thank you so much. l've been searching for a simple way to understand this
This video is so well put together, and the examples done are perfect to show how induction can be used with sequences. Thank you very much
Thank you! It's my first year in university, the algebra professor started the first class with this and I couldn't understand anything 🫶🏽
Wow. You made this so much easy. Thank you
Thank you so much for the great explanation
36:55 why is it not In subscript 2(n-1)? because in the previous step the exponent was 2n-2.
Amazing video, clear and consistent
Your explanatios are very clear,thank you for those gems <3
Awesome video.... love the way you took time to ezplain each step you took.. I Didn't understand anything (i'm relatively new to calculus but have an exam that might cover this in 6 days) but i hope to understand it as much as you someday ❤
nice
He never finished linear algebra 😢
🤯
I don't know if I commented before, but this video is terrible. Too much yapping on, and not very clear in parts. For example, why bring up the mystery of the formulae for simple shapes just to go straight on to say the FTOC shows how differentiation and manipulation are related? I would recommend scripting this. You obviously enjoy this, and it seems you have a good understanding, that's just wasted ig your video is messy - especially given all the other material on UA-cam. I appreciate the upload, however 👍🏻
The video is good to me.
@@gouriss cool, but I don't get the point of telling me that. If it's useful then I'm happy for you, maybe it's differences in requirements of the depth of understanding.
i really want to thank you because you greatly helped my studies and if your seeing this THE VIDEOS YOU PROVIDE ARE SIMPLE AND A LOT HELPFUL than any modules and teachers I've ever met. Please continue uploading and you have got yourself a loyal subscriber. Thanks a lot
In example 1, isn't (-2x^3 / 3) + (6x / 3) = (-2x^3 + 6x) / 3 ?
calculus for grade 7 plsss🙏
whaf if his written mine.😢
Sudah....
Correct me if I'm wrong but wouldn't (-1) (-7) = 7 and NOT -7?
(-1)(-7) divide by (-4) = - (7/4) or -7/4
Dont tell anyone im learning this in g7 >:D
Which lecture is about linear Transformations? Having a hard time finding it but other than that great vid!
in the first example, you got n >-9 but then you summed the first 10 terms, why is that? why not sum up the first 9 terms since n is greater than and equal to 9? Thanks.
Thank you so much for the videos, do you have plans to make a Math 209 playlist?