Multiple Integrals 17: Area of a Three-Petaled Rose

[oleyokeyyy]

Thanks for these videos, i learn a lot from you and I like your style; i think that people explaining maths should be more excited and energetic like you.

But to find the limits for teta, couldnt we just look at the equitation r= sin3teta and find that teta has to be 0 or pi/3 (+k2pi) in order for to be zero. Is there something wrong with that method?

[tevaligaru]

Ok,... :) Now these concepts are going to be embedded in my mind forever and ever !! 

[NinjaXSong]

lol, in one regional competition for high schoolers, there was the question: What is the largest integer less than 1/sqrt(2)+1/sqrt(3)+...1/sqrt(­10000). I thought I could try some tricks, because i thought a high school math competition didn't require Calc, but after my last resort of using calc to bound the sum, I got mad >=(

[lyricssmiley]

hmmm...it.s good but can you pls slow? ;P

[Milchi7]

Thanks man! Im deeply grateful for your lessons, I was just desperately looking for some more :D I even learned more english here, cause i had to understand your fast speaking x) . Guess Im now ready for some more maths in the ETH =P

[kakashi1992e]

thank you so much donny!

I loved your explanation of the rose....was really helpful! ^__^

[DoubleDutchBust]

Multiple Integrals 17 2:23

Three Petaled Rosey 17

Carl Edward Saganye 0:17

Three Petaled Rosey 17

Multiple Integrals 17 2:23

Petaled Rose

donylee Drsg

[DoubleDutchBust]

Multiple Integrals 17

Three Petaled Rosey 17

Carl Edward Saganye 0:17

Three Petaled Rosey 17

Multiple Integrals

Petaled Rose

donylee Drsg

[InitialDAmine]

nice effort i guess.........

Just to let you know you made a little mistake written on the board while drawing O -> Sin(O) you wrotte instead Sin(3O).

I m not going to explane how do it in a more simple way because maybe you didn't see or you polar fonction study wasn't as profound .

[500stephen500]

in school i'm using a different formula to find the surface area fo a polar coordinate. A=Integral(1/2 r^2 D(theta)). what the difference between the double integral method and my formula.

[SalaiLawrence]

Yes....sir!!! u really make me dizzy....don't joke,OK!!? lolz

[dmsmalls13]

ah man, I wish I found these videos about 4 weeks ago! Great for reviewing though. Thanks a lot for these!

[Whatsauce202]

Love your videos dony, they are awesome.

[dwayne3000]

damn... u're too good...

lol

[slashnghost]

Hi Dony your integrals lessons are great :D. BUT What abaut more complicated things like Volume of solid between Cone and Hiperboloid or Triple integrals ?

[donylee]

Yup.

Triple integrals. I know how to do them but didn't get the chance to make a video series on them.

Hopefully in the future.

[scoutcube1]

is this a joke or are you serious?

[thehuhu]

my head just exploded. twice.

[XUnrealpkI]

hey thx for the video. can you make some more on fourier transforms, and z transforms.

[theresnothingnew]

wow youre amazing! i wish u are my calc teacher

[mostafa88]

Can you please, please help me understand the optimization? I know it a beginers level but it would be a grat help. thanks

[donylee]

Optimization? This is not an optimization problem which I assume uses differentiation.

Or you mean parameterization?

[azntbooi]

very nice keep up the godo work!

[MYoung2010]

Finally. I understand double integrals now! Thank You!

[superdan006]

genius: extraordinary intellectual power especially as manifested in creative activity

[nd7474]

excellent.........wow from seoul, south korea

[genocideengineering]

Dont stop doing what youre doing your great.

[Jesusfleabop]

have you done anything on the uniqueness and existence, or exactness theorems?

[donylee]

Nope, sorry. Haven't dwelled in that area and probably won't anytime soon. I'm considering taking on Linear Algebra as used in Quantum Mechanics next.

Thanks for your interest.

[KFCYellow123]

Wow, we are looking forward to that. Thanks for your great video again.