Volumes of Revolution about x-axis - Introduction : ExamSolutions

Introduction tutorial on volumes of revolution about x axis.

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[craftyunicorn]

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!

[SalmanSheikh-htcq]

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!

[che]

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!

[ExamSolutions_Maths]

Basic expanding of the bracket (x^2+1)^2

[studyingmk]

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

[adamkwasny]

Your tutorials are very helpful. Thank you!

[rosette_renah]

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

[KMulaa]

You are amazing! Thank you so much! I wouldn't be able to pass my A levels without you!

[abhiuser-zjmmyp]

Sir, please explain how to draw parametric and polar curves.

[mikerosz]

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.

[ExamSolutions_Maths]

@Nicola72av Yes it is. make sure a and b are y values

[malcolmmahwire]

Thank u. Am passing my Cambridge exam today because of u

[ExamSolutions_Maths]

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.

[ExamSolutions_Maths]

@daspinguru Thanks for that. I have now added an annotation.

[tiffanypersad]

can u do some more examples of these using different equations? it will make understanding and answering questions easier.

[nunaziz]

well done..u r really a teacher...dank u well.

[tiffanypersad]

thank you for explaining it to me easily i now understand what to do.

[azwi]

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?

[ramyagururajan]

hey
so do the limits given always show what axis its rotated around

[xBustedHeart]

this was a mighty aid for my exam review, tysm