cylindrical coordinates

[sepia2008]

very well explained and very helpful thanks a lot !

[jstutts159yt]

All the girls in my class recommended your videos. My understanding has increased, but my lady rapport has decreased. I am invisible now due to you and your videos. Thanks a lot Professor Heartthrob

[RuSh187]

ur the shit man

[karenly90]

Awesome! I was able to understand the subject right after I spent 10 minutes to watch this, while I could not understand at all during my 2 hours Cal 3 class. It is all spoil down to how good a professor can explain the part.

Thank you so much for this clear explanation.

[iceprince90]

Why did i get -16pi/3??????? WHY IS IT NEGATIVE!!!

[valflyinf]

@iceprince90 You probably made a mistake when you get 0 - -r

You probably got just -r instead of +r because you forgot one of the negative signs??? Just a thought. I just did it and got it right.

[pusikcat]

Thank you for the help! Nice explanation!

[waspy89]

I'm in Calc 3 and we are doing Cylindrical Coordinates. My question has more to do with trig though. We just want to convert (4,-4,5) to Cylindrical.

r = 4 root 2

and x = arccos r/x which was 4 / 4 root 2 which reduces to 1 / root 2.

the answer was 7PI / 4

and for the life of my I can't figure out why!! Can someone explain why 1 / root 2 corresponds to 7 PI / 4? I know this is fairly easy but can't figure out the reason.

[Triple777ER]

Once again, well explained. Really makes the difference when you have such a good teacher!

[kkk3006]

Now I understood better... thank you so much!

[someones1]

nice

[viraldeception]

very nice, got me going in the right direction

[12BigP]

excellent job, thanks a lot.

[durrani01]

cos 60=((3)^1/2)/2

[durrani01]

the value of cos45=1/(2)^1/2

[Whatsauce202]

I notice not a lot of people view or comment your videos, but I wanted to let you know, its an awesome resource from my calc III class!

Keep up the good work.