![Quoc Dat Phung](/img/default-banner.jpg)
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Quoc Dat Phung
Canada
เข้าร่วมเมื่อ 14 ก.ค. 2020
Hi there! My name is "Quoc Dat", and "Phung" is my last name. I love creating content and making tutorials about math and coding on TH-cam!
Prove the Area of a Square using Integral Calculus
In this video, I will show you how to prove the area of a square using integral calculus. First, you use the area formula under a function, which is equal to the integral from a to b of f(x), where f(x) is a curve of a straight line. Then, we evaluate that integral. This is an important concept to master for Calculus students whether they are taking AP Calculus in high school or they are taking calculus at university.
มุมมอง: 228
วีดีโอ
Prove the Area of a Rectangle using Integral Calculus
มุมมอง 6319 ชั่วโมงที่ผ่านมา
In this video, I will show you how to prove the area of a rectangle using integral calculus. First, you use the area formula under a function, which is equal to the integral from a to b of f(x), where f(x) is a curve of a straight line. Then, we evaluate that integral. This is an important concept to master for Calculus students whether they are taking AP Calculus in high school or they are tak...
Trigonometric Substitution (3 Formulas) - Calculus
มุมมอง 8914 วันที่ผ่านมา
In this video, I will show you how to use trigonometric substitution to solve integrals. There are 3 forms or formulas you need to know. I go through plenty of examples with trig substitution because this is an important topic. You should use trigonometry substitution when you cannot solve the integral with u substitution or integration by parts. There are three forms you need to know: the squa...
Integral of sqrt(x² - 2x)
มุมมอง 7121 วันที่ผ่านมา
In this video, I will show you how to use trigonometric substitution to solve the integral of sqrt(x² - 2x). You should use trigonometric subsitution when you cannot solve the integral with u substitution or integration by parts. There are three forms you need to know: the square root of (x^2-a^2), the square root of (x^2 a^2), and the square root of (a^2-x^2). In the first case, x=asinθ. In th...
Solving the Integral in MY HERO ACADEMIA - Calculus Anime
มุมมอง 797หลายเดือนก่อน
In this video, I will show you how to solve the integral from the anime My Hero Academia using Calculus! It is quite a difficult integral but it is not impossible if you know about hyperbolic functions. I hope you enjoy this video, please don't forget to subscribe if you like my solution!
Integral of sqrt(3-7x²) using trigonometric substitution
มุมมอง 247หลายเดือนก่อน
In this video, I will show you how to use trigonometric substitution to solve the integral of sqrt(3-7x²). You should use trigonometric subsitution when you cannot solve the integral with u substitution or integration by parts. There are three forms you need to know: the square root of (x^2-a^2), the square root of (x^2 a^2), and the square root of (a^2-x^2). In the first case, x=asinθ. In the ...
Integral of (x² - 1)^-1.5 with trigonometric substitution
มุมมอง 177หลายเดือนก่อน
In this video, I will show you how to use trigonometric substitution to solve the integral of (x² - 1)^-1.5. You should use trigonometric subsitution when you cannot solve the integral with u substitution or integration by parts. There are three forms you need to know: the square root of (x^2-a^2), the square root of (x^2 a^2), and the square root of (a^2-x^2). In the first case, x=asinθ. In th...
Integration By Parts - Calculus I
มุมมอง 251หลายเดือนก่อน
In this video, I will show you how to solve integrals using Integration By Parts. You should use integration by parts when you cannot solve the integral with u substitution or trigonometric substitution. Usually, integrals that can be solved by integration by parts will have two parts in the integrand, the u part and the v part. We use the acronym LIATE, which stands for log, inverse trigonomet...
Variables and Data Types in Python are Easy 🐍
มุมมอง 56หลายเดือนก่อน
In this video, we will dive deep into the fundamental concepts of variables and data types, essential for any Python programmer. We'll begin by explaining what variables are and how they are used to store and manipulate data in Python. We'll cover variable naming conventions, assignment statements, and explore the different data types available in Python, including integers, floats, strings, bo...
How to Get User Input in Python (very easy) 🐍
มุมมอง 792 หลายเดือนก่อน
I will show you how to write a program to receive user input in Python. We'll start by demonstrating how to prompt the user for a string input using the input() function. Then, we'll move on to integer input and show you how to convert a string input into an integer using the int() function. Next, we'll tackle float input and explore how to convert string inputs into floating-point numbers usin...
Commenting in Python (Multi-line) 🐍
มุมมอง 3382 หลายเดือนก่อน
In this video, I will show you how to comment in Python. Comments are used to tell the compiler to ignore one or more lines of code. Commenting also allows other people to understand what your code does, and it is a great wait to show you explanations. There are two ways to comment in Python. One way is to use the hastag symbol #, and the other way is to use the triple single quotes for multi l...
Integral of cot(x)ln(sinx) using Substitution
มุมมอง 1072 หลายเดือนก่อน
In this video, I will show you how to solve the indefinite integral of (cotx)ln(sinx) using u substitution. This is an important topic for students taking Calculus, whether it is AP Calculus or Calculus in university. The idea behind u-substitution is to simply the integrand. For example, we can simplify 1/(2x 4) with 1/u where u=2x 4. The second step is to differentiate u with respect to x, th...
How to Prove or Disprove Big Ω - Introduction to Computer Science
มุมมอง 1.2K2 หลายเดือนก่อน
In this video, I will show you how to prove or disprove Big Ω (Big Omega). I will also go over the formal definition of the formula Big Ω using asymptotic notation to determine the runtime of an algorithm. For example, you are asked to prove that a function 2n 3 is Ω(n). By the definition of big Ω, f(n) is Ω(g(n)), or f(n) is Big Omega of g(n) if you can find a positive constant c and a positiv...
Print() and F-Strings in Python Explained ✔️
มุมมอง 662 หลายเดือนก่อน
Hi everyone, in this video, I'm going to show you how to use f strings along with the print statement in Python. F-strings, also known as formatted string literals, are a feature introduced in Python 3.6 to simplify string formatting. They provide a concise and convenient way to embed Python expressions inside string literals for formatting. To use an f-string, you simply prefix the string with...
Python for Beginners - Learn Python in 1 Hour (2024)
มุมมอง 6273 หลายเดือนก่อน
This free 1 hour Python course is for people who want to learn how to program in Python. You do not need to have any experience with coding before hand. If you already have programming experience in other languages other than Python, this course is design to be concise so you can learn all the core syntax in one hour. Python is probably one of the most popular languages used at big tech compani...
Are u rep,ying with auto reply?
Nope. I always redirect people to my CS playlist. Sometimes people watch something like Selection sort and they ask if I can explain QuickSort but they don't know that I already made it, in the playlist.
I don't know if yall notice something.. May be you all got too lost in the jungle of equation... But he also has one of the most beautiful smile! I bet if didn't know calculus he could make a good living by becoming a Dental Office Model or some shyt like that.
thank you i can sleep well now knowing i know stuff
You're welcome! You'll probably like my Binary Search video. Please kindly share and subscribe~ you can find all of my CS videos in this link: th-cam.com/play/PLeTO6OT3-FKmuxOu4RtupTay1yrMp6QGC.html
This tutorial was great! Very clear and actionable.
Thank you Gleb! You'll probably enjoy my other sort videos. Please kindly share and subscribe~ you can find all of my CS videos in this link: th-cam.com/play/PLeTO6OT3-FKmuxOu4RtupTay1yrMp6QGC.html
thank youu!
that was so good
You're very welcome Naaaaur! Please don't forget to share with your classmates and kindly subscribe ~ you can find all of my Calculus II videos in this link: th-cam.com/play/PLeTO6OT3-FKmuCeO97iKt_Aibx-a938JA.html
Quoc, I just found your channel a few days ago while studying for my exam and I want to thank you for your amazing videos! Would love to see more calc 2 videos.
Thank you Calvinbutz! Please don't forget to share with your classmates and kindly subscribe ~ you can find all of my Calculus II videos in this link: th-cam.com/play/PLeTO6OT3-FKmuCeO97iKt_Aibx-a938JA.html
thank you or this, by the last 1,4 I did it my self
You're welcome iTube! Please kindly share and subscribe~ you can find all of my CS videos in this link: th-cam.com/play/PLeTO6OT3-FKmuxOu4RtupTay1yrMp6QGC.html
omg thank u
OMG you are a genius
Thank you Suleimanparizadi! You'll probably enjoy my other sort videos. Please kindly share and subscribe~ you can find all of my CS videos in this link: th-cam.com/play/PLeTO6OT3-FKmuxOu4RtupTay1yrMp6QGC.html
298.15°
Found you recently and I am glad I did!!
Thank you David! Please don't forget to share with your classmates and kindly subscribe ~ you can find all of my Calculus II videos in this link: th-cam.com/play/PLeTO6OT3-FKmuCeO97iKt_Aibx-a938JA.html
I was struggling with this so much. Thanks and love from India.
Thank you Alien! Please don't forget to share with your classmates and kindly subscribe ~ you can find all of my Calculus II videos in this link: th-cam.com/play/PLeTO6OT3-FKmuCeO97iKt_Aibx-a938JA.html
Great video! Very helpful.
Thank you! Please don't forget to share with your classmates and kindly subscribe ~ you can find all of my Calculus II videos in this link: th-cam.com/play/PLeTO6OT3-FKmuCeO97iKt_Aibx-a938JA.html
Anh ơi, anh có thể lên video hướng dẫn rubik 3×3 ko ạ?
anh giảng hay quá, anh nói tiếng anh dễ nghe mà chuẩn. Mong anh sản xuất thêm nhiều video hay và chất lượng nữa ạ.
Cám ơn em! Em nhớ chia sẽ cho các bạn học và đăng kí ủng hộ anh nhé. Những bài dạy toán của anh ở đây: th-cam.com/play/PLeTO6OT3-FKmuCeO97iKt_Aibx-a938JA.html
thank you the explanation is very simple , any tips books to read to improve my logic and understanding of python i am a beginner currently busy with zero to hero course on udemy.
Yes I do have a free 1h Python course! You can find it here: th-cam.com/play/PLeTO6OT3-FKnRuP8j_qr-hrfSUqh0sqdx.html
Just sort them and check if they are equal and done. If I see a solution like the optimal one give (and I've seen a bunch of videos with people doing this solution), I'm going to assume that whoever is implementing this is going to over engineer the most basic tasks in the code base and its going to be a nightmare to support
I was 100% from beginning to end. You're a great teacher.
Thank you G.R! Please kindly share and subscribe~ you can find all of my CS videos in this link: th-cam.com/play/PLeTO6OT3-FKmuxOu4RtupTay1yrMp6QGC.html
thank you so much man, you are a lifesaver
You're very welcome! Please don't forget to share with your classmates and kindly subscribe ~ you can find all of my Calculus II videos in this link: th-cam.com/play/PLeTO6OT3-FKmuCeO97iKt_Aibx-a938JA.html
awesome video, very clear
Thank you! Pleased kindly share and subscribe~ you can find all of my CS videos in this link: th-cam.com/play/PLeTO6OT3-FKmuxOu4RtupTay1yrMp6QGC.html
Better than Abdul!
Thank you Ethan! Pleased kindly share and subscribe~ you can find all of my CS videos in this link: th-cam.com/play/PLeTO6OT3-FKmuxOu4RtupTay1yrMp6QGC.html
I really like your explination.
Thank you Yousef! I think you'll like my Binary Search video. Pleased kindly share and subscribe~ you can find all of my CS videos in this link: th-cam.com/play/PLeTO6OT3-FKmuxOu4RtupTay1yrMp6QGC.html
Hello Quoc, I love your teaching anyway how about DSA stacks queues?😍😍😍😍😍😍😍😍
Hi OeunBusan! Thanks for letting me know I added these topics into my long list of requested topics and I will work on them as soon as I can!
I love your performance You was developed my level I came from Rwanda 👋👋👋👋👋👋👋
Hi there! Thanks so much I'm glad you enjoyed! Please kindly subscribe and share with others!
Thx
Thank you! Please kindly share this video and subscribe. It means a lot!
Lemma??
Got A=6m^2. Thanks for the help!
Bro, you're amazing, explaining the complex processes so easily. Haven't touched DSA for a long time, and then having to learn it all over again after being laid off is really hard for me as I'm not as young. You've just helped me understand fuzzy complex knowledge really really well. Thank you !
Thank you Khoa! I'm really happy to hear that! Pleased kindly share ~ you can find all of my CS videos in this link: th-cam.com/play/PLeTO6OT3-FKmuxOu4RtupTay1yrMp6QGC.html
@@QuocDatPhungI’ll share it, and have a look at your playlist. Really appreciate your contents.
Bros scaring me with that smile😅
good explaination must watch
Thank you! Pleased kindly share and subscribe~ you can find all of my CS videos in this link: th-cam.com/play/PLeTO6OT3-FKmuxOu4RtupTay1yrMp6QGC.html
Quoc Dat Phung, I'm so glad i found your channel, i feel incredibly fortunate. It yielded positive results. Thank you
Thanks you cleared my ver first and most annoying doubt for integrals.❤❤❤❤
You're very welcome! Please don't forget to share with your classmates and kindly subscribe ~ you can find all of my Calculus II videos in this link: th-cam.com/play/PLeTO6OT3-FKmuCeO97iKt_Aibx-a938JA.html
i feel like im gonna fail tomorrow to be honest
You're not going to fail! If you need help you can find all of my Calculus II videos in this link: th-cam.com/play/PLeTO6OT3-FKmuCeO97iKt_Aibx-a938JA.html
How did it go? Mine's tomorrow💀
@@Heelo_0 Good luck!
@QuocDatPhung thanks brother, take care
Any updates? How did it go for y'all 💀
bigO notaion is very confuse ):
No worries! I have videos on Big O! You can find it in this link: th-cam.com/play/PLeTO6OT3-FKmuxOu4RtupTay1yrMp6QGC.html
Don't you think c^n is bigger than n^c
Yes, in the video I said that c^n is bigger than n^c at 5:20
Do you always round down or there a rule?
Yes. You always round down. For example, 3.1 becomes 3. How about 4.9? It will be 4. Please let me know if that makes sense. I hope you enjoyed the video!
Great video
Thank you Phoenix! I think you'll like my other Sort videos too! Don't forget to share with your classmates and kindly subscribe ~ you can find all of my CS videos in this link: th-cam.com/play/PLeTO6OT3-FKmuxOu4RtupTay1yrMp6QGC.html
watching this for my summer courses as motivation
Thanks so much! I subscribed!
Thank you!! You can find all of my Calculus videos here: th-cam.com/play/PLeTO6OT3-FKmuCeO97iKt_Aibx-a938JA.html
Calculus is beautiful
Indeed! Please kindly subscribe and share if you enjoyed! It means a lot!
Simple and Clear explanation... thank you. Gr8 video
Thank you Shivasutube! Don't forget to share with your classmates and kindly subscribe ~ you can find all of my CS videos in this link: th-cam.com/play/PLeTO6OT3-FKmuxOu4RtupTay1yrMp6QGC.html
I found another way to do it, and it involves a lot of multiplication. Logistically, much more difficult, but it works. .5^14 * I, where I is the integral, and then u-sub for u = e^x Bounds of 1 to 1 + sqrt2 by expansion: [(u - 1/u)^3 * (u + 1/u)^11]/u I * .5^14 = 107/28 Checked this by calculator, would be hell otherwise lmao. When i think about this, this is a reasonable way that i can see being used to make the problem tougher. Seeing division by u would be a clear sign because u = e^x would cancel that out.
Yeah that would work! I prefer the hyperbolic version as it requires less work. I hope you enjoy the video! Please kindly subscribe and share to support me!
@@QuocDatPhung yeah it was a good video and i think by working it through in this way i was able to appreciate the hyperbolic identities much more 😂
This is good for the children 👏 🙌 🙏 ❤❤❤
I love you
Thank you! I have videos on Big Theta and other topics too! Pls don't forget to share with your classmates and kindly subscribe ~ you can find all of my CS videos in this link: th-cam.com/play/PLeTO6OT3-FKmuxOu4RtupTay1yrMp6QGC.html
Thank you!
Thanks Roryeehaw! Don't forget to share with your classmates and kindly subscribe ~ you can find all of my Calculus II videos in this link: th-cam.com/play/PLeTO6OT3-FKmuCeO97iKt_Aibx-a938JA.html
You could stil solve in terms of x.
I did.
Best teacher on this topic.
Haha thank you! I'll show you how to find the volume of other shapes like the cone. You'll likely get that question on the exam ~ here's the link to all of my Calculus II videos: th-cam.com/play/PLeTO6OT3-FKmuCeO97iKt_Aibx-a938JA.html
Thank you very much
I'm glad you like it Asadparvez! Don't forget to share with your classmates and kindly subscribe ~ you can find all of my Calculus II videos in this link: th-cam.com/play/PLeTO6OT3-FKmuCeO97iKt_Aibx-a938JA.html
Nice one!
Thanks MartenCarlsson! Don't forget to share with your classmates and kindly subscribe ~ you can find all of my Calculus II videos in this link: th-cam.com/play/PLeTO6OT3-FKmuCeO97iKt_Aibx-a938JA.html
You know how to teach!!
Thank you Akashsangwan! Don't forget to share with your classmates and kindly subscribe ~ you can find all of my CS videos in this link: th-cam.com/play/PLeTO6OT3-FKmuxOu4RtupTay1yrMp6QGC.html