THANK YOU SO MUCH! I've recently studied differentiation at school but had no idea what it was all about... I knew the techniques but didn't know what I was doing.. This video cleared everything out... Now I know what it means! Thank you! Been following you since a while now and your videos are Life savers! Thinking of leaving college now and solely following you to for A'level xD
Thanks very much Stuart for all your hard work creating these videos over the years. These videos are a fantastic resource for people like me, you used to be amazing at math and lost it after leaving school. But with issues with BTEC Nationals, which math is not well covered even in Engineering and IT. This can cause problems for students wanting to go to University just with a BTEC National alone. Though thanks to you, I can go back to the basics when I come to problem in Discrete Mathematics in University. Without annoying the professor about a simple problem I cannot understand.
So I spent the whole day trying to understand this just to come here and understand in 16 mins. Smh...thank you so much dude you’re a life saver. You make math easy 🤩
The surface area = 2x^2 + 3xy = 54 (two ends + 2 sides + base area) Make y the subject so y= (54 - 2x^2) / 3x Now the volume =y x^2 Sub in y so volume = x^2 [ (54 - 2x^2) / 3x ] to give 18x - 2 x^3 / 3. I hope that helps?
9:08 I don't understand this. This method doesn't seem to work for the last graph you showed. On that one it gives x = -3 How do you know that's the only stationary point on the graph and the one you want?
x= 3 is not the only stationary point. However, in the example of the cuboid, we found that x = 3 is the only stationary point which gives us the maximum volume (a positive number)
Hi there, trying to embed your video into a private learning resource but its not allowing me? I've been able to for some of your other videos - would it be okay for you to format the video so I would be able to do this? Thanks
I have only produced a video on differentiation from first principles. I don't think this is what you had in mind though but your welcome to look at it here. ruclips.net/video/Ayf9gKwjXlY/видео.html
![Blox Fruits Dragon Rework Update [Full Stream]](http://i.ytimg.com/vi/EqDAp8udhm0/mqdefault.jpg)
This is an excellent explanation of dy/dx. It's the best l have seen.
I had been trying to understand a problem for my calculus class for like 3 hours, this video got me through in only 16 minutes. Thank you so much.
Good to hear.
Thank you! This really helps to further my understanding!
THANK YOU SO MUCH! I've recently studied differentiation at school but had no idea what it was all about... I knew the techniques but didn't know what I was doing.. This video cleared everything out... Now I know what it means! Thank you! Been following you since a while now and your videos are Life savers! Thinking of leaving college now and solely following you to for A'level xD
Thanks very much Stuart for all your hard work creating these videos over the years. These videos are a fantastic resource for people like me, you used to be amazing at math and lost it after leaving school. But with issues with BTEC Nationals, which math is not well covered even in Engineering and IT. This can cause problems for students wanting to go to University just with a BTEC National alone. Though thanks to you, I can go back to the basics when I come to problem in Discrete Mathematics in University. Without annoying the professor about a simple problem I cannot understand.
Thank you for those kind words. Best wishes to you for a fantastic future.
thinking of doing a-level maths and the textbooks ive bought arent as helpful as these vids- thank you!
Thanks for that but I am sure a text book can provide more examples for you than I can which is essential to gaining confidence in maths.
This is THE BEST
So I spent the whole day trying to understand this just to come here and understand in 16 mins. Smh...thank you so much dude you’re a life saver. You make math easy 🤩
Thank you. That's the name of the game.
Excellent explanations, thank you !
great video keep them coming please
this video is such a big help will be honest
Thanks for helping me go through my a levels because these videos are making things so much easier
Happy to help/
thank you so much
Appreciate your hard work! So nicely explained. Keep up the good work.
Thank you for your kind words! It makes it worth it
You made my 14 years old self understand something ! I’m hoping to understand calculus by the end of the year !
Good luck. I hope my videos can help in some way.
i was very out of touch with my maths and this has helped me a great deal so thank you.
thank you very much 💜
thankyou soo much your an absolute life saver
8:22 how did you figure out that would be the volume
The surface area = 2x^2 + 3xy = 54 (two ends + 2 sides + base area)
Make y the subject so y= (54 - 2x^2) / 3x
Now the volume =y x^2
Sub in y
so volume = x^2 [ (54 - 2x^2) / 3x ]
to give 18x - 2 x^3 / 3.
I hope that helps?
ExamSolutions thank you that makes sense
At 2:02 can you explain how you expand y
ty brother !
ty
Is the playlist helpful and is it in series where everything is going step by step? I need to learn this topic asap soo please someone tell me
Thats great need the next presentation please
great video. thanks
i've been enlightened
Thank you sooooo much!
9:08 I don't understand this. This method doesn't seem to work for the last graph you showed. On that one it gives x = -3
How do you know that's the only stationary point on the graph and the one you want?
x= 3 is not the only stationary point. However, in the example of the cuboid, we found that x = 3 is the only stationary point which gives us the maximum volume (a positive number)
Awesome.
Thank you
You're welcome. Thanks for watching.
You made it look easy but I don’t know why I can’t solve fractions on my own.
Hi Stuart, could you let me know which software you utilise to create the graphics for your tutorials please?
amazing
is this from NUS course MA1301 ?
Good
Hi there, trying to embed your video into a private learning resource but its not allowing me? I've been able to for some of your other videos - would it be okay for you to format the video so I would be able to do this? Thanks
What is the private resource? Have you a link?
Where are you I need the vid grind smh
Is there any proof of the form dy/dx=anx^n-1 ????
I have only produced a video on differentiation from first principles. I don't think this is what you had in mind though but your welcome to look at it here. ruclips.net/video/Ayf9gKwjXlY/видео.html
super
Find dy by DX if y=e root cot x
Hi Stuart, what software do you use to produce the graphics for your tutorials?
don't say that I'm the only one trying to revise for IGCSEs and got no idea what dy dx was
DYDX token went live today
Has any body noticed that this guy sound like Apple
Thank you.
Thank you