Volumes of Revolution about x-axis - Introduction : ExamSolutions
Вставка
- Опубліковано 23 сер 2024
- Introduction tutorial on volumes of revolution about x axis.
UA-cam CHANNEL at / examsolutions
EXAMSOLUTIONS WEBSITE at www.examsoluti... where you will have access to all playlists covering pure maths, statistics and mechanics.
/ examsolutions.net
NEW INSTAGRAM: / examsolutionsguy
TWITTER: / examsolutions
PREDICTIVE GRADES PLATFORM
LEARN MORE AT: info.examsolut...
☑️ Accurate grade predictions
☑️ Personalised resources and tuition
☑️ Guaranteed results or get your money back
SIGN UP FOR A 7-DAY FREE TRIAL, THEN 20% OFF.
share-eu1.hsfo...
ONLINE COURSES AT:
www.itutor.exa...
THE BEST THANK YOU: www.examsoluti...
I can't explain to your how much your videos have helped me! Your literally the reason I'm doing so well in school! You have saved me bucket loads to stress and helped me to grasp concepts so quickly! A HUGE thank you from a current A level student!
I am pleased to hear that things are picking up for you and you are getting your confidence back. Well done. May you go from strength to strength.
When our teacher introduced us to this topic, I spent the entire lesson struggling to understand what he meant by "revolution". You just broke it down into the simplest way possible. I really appreciate the drawing because they were key to helping me visualize what happens. Your drawing are not bad either, they're quite decent tbh! Thank you!
Thank you so much for this video. I did calculus in High school and never could get my head around this. I am a very visual person and my teacher was not. Now retaking Calculus in college, you've helped me clear all my confusion. I am acing this class.
I loved the beautiful drawings and neat setup. Thank you again!
Hello thank you this video was so helpful! I'm not too sure but I think there was an error for the final answer as I am getting 1016/15 not 1066/15
Oops! you are right. Just checked it. Careless mistake on my part on reading the calculator. Should have gone to Spec-savers!
This mistake had me throwing stationary. Thanks a lot smh
This had me worried that I had got it wrong, thank you
You are a legend- Many thanks
Basic expanding of the bracket (x^2+1)^2
Nice video,thanks for the introduction to this.Though at7:32 ,how did you get that 1066/15Π coz i haven't got that as my answer
Yes ,thanks good spot- it's a small typo. The correct volume is pi*((348/5) - (28/15)) = 1016/15pi
@@ExamSolutions_Maths OK,,thanks
Would have spent half an hour why am I getting wrong answer thanks mate😅
You are amazing! Thank you so much! I wouldn't be able to pass my A levels without you!
you're saving my A Levels TT-TT
Your tutorials are very helpful. Thank you!
Thank u. Am passing my Cambridge exam today because of u
Sir, please explain how to draw parametric and polar curves.
The region to be revolved about y = 1 should be bounded by the graph of y = e^-x and the x-axis from x = 0 to x = 1.
@Nicola72av Yes it is. make sure a and b are y values
@daspinguru Thanks for that. I have now added an annotation.
Thanks for help me
life saver
is this a level or further maths?
can u do some more examples of these using different equations? it will make understanding and answering questions easier.
I got the volume = 1016/15 pi
same
Same here
Same
Thanks
well done..u r really a teacher...dank u well.
thank you for explaining it to me easily i now understand what to do.
A good question but one that I cannot answer here as it is too involved and hard to describe using just text. I have made a note now to add this to my list and do at some point.
Thank you!
I found this question saying that, show that the volume of solid formed when R is rotated completely about x-axis is 4/3 pie, what does that mean about being rotated?
hey
so do the limits given always show what axis its rotated around
Isnt it 1016 over 15 pi
Thank you so much sir 🤞
what is the app u are using ?
Thank you
You're welcome. Thanks for watching.
this was a mighty aid for my exam review, tysm
Good video
Great
Thanks this was helpful :)
good
cheers!
Audio. But very helpful best drawings
Is this required in Edexcel A level? I have a summary of changes (2017)stating it is not. Yet a 2018 C4 paper includes it. Please help...
C4 is the old module surely? This is now on the new spec for Further Core Pure Maths.
@@ExamSolutions_Maths yes, but the summary of changes was for the new specification. I have searched the new spec for it- can't see it. Thanks for your work by the way. I have contributed.
I found it in Further Maths spec. Thanks
@@mensamoo No problem
@@mensamoo Thank you
thank u so much sir
No problem - thanks for watching
excellent drawing, no worries pal :)
Thankyou
I know you say thanks a lot and I appreciate it. Thank you for watching.
@lolkiwi Thanks
I have been watching your videos and I'm still little confused on how to approach this problem
Just translate the graph down by one unit so that it would give the same volume as if spun round the x-axis. so use y=(e^-x) - 1
Sounds like the "how you like them apples" guy from Good Will Hunting...minus the accent of course.
I might be wrong but isn't it 1016 not 1066?
You are indeed correct. Well done for checking and confirming.
11years😱
nobel
It is spelt pi, not pie. That's a food, not a Greek grapheme
I thought there would be a proof
you spelt "pie" wrong lol
accidently pressed dislike haha