Partial derivatives. Chris Tisdell UNSW Sydney

[MrPEDOCTOR]

he speech is superb

[jhamien920]

This is a great help for me.

[DoubleDown200]

very well done, nice and easy going keep it up sir!

[snozzla]

this was great, thanks !

[HugeDeek]

If i take business course I won't have to learn these things right?

[testingpidgin]

Hi,

Can the videos be freely downloaded? I could not see any link to do that.

[carinasolan]

Hello Dr.Tisdell, thank you for your videos. I would like you to help me to solve the following partial differential equation:

a*dy/dx - b*dy/dt = K(y-yi)

being a, b and K constants

this equation translate the mass transfer in a column.

any help?

thanks a million.

[FIFAMAN07C3]

The only thing I`m confused about is why d/dy of sinx = 0

[FIFAMAN07C3]

@FIFAMAN07C3 nevermind i just realized that if x is a constant and you take its sine value its also a constant. and that derivative = 0

[snshusat161]

@FIFAMAN07C3 cause sinx is to be treated as constant when differentiating w.r.t to y. 

[nolaeast]

I thoroughly enjoyed the lecture. You are a good instructor. You are clear, concise and your preplanning is impeccable.

[DrChrisTisdell]

Thanks for commenting! Glad you finding these useful.

[TheJeffCrew]

only prob with the videos is that there are no jokes like in class. textbook me please math1231 :)

[DrChrisTisdell]

You're in the running, Jeff! (Just in time!)

C

[CR4NKSH4FT]

Dennis auroux is amazing...But you are also doing great !

[CR4NKSH4FT]

I am going to be very honest Sir, Its been an absolute pleasure watching some of your earlier videos, and although I am only in math1231 I was dying to find good quality teaching resources from UNSW. I love watching vids in my spare time and it helps in reinforcing the concepts i learn in class.

I usually watch lectures from MIT and I find that getting various perspectives on a topic helps develop depth of understanding. I am glad to say your lectures easily compare If not trump the MIT ones.

[DrChrisTisdell]

Hi CR4NKSH4FT - really appreciate your comments. In fact, they've made my week!

I agree that the MIT maths vids are great (and so are the Stanford Engineering Everywhere ones) and I watch them too for a bit of inspiration and comparison.

If you've been watching other vids then you might have heard of Gil Strang + Denis Auroux (MIT) or Stephen Boyd (Stanford) who also have very popular videos.

I am no Gil Strang or Stephen Boyd, but I am trying hard! :-)

[Jarshiker]

Wow you break it down and make it so understandable! Pity I have Other classes on during your lectures. Please keep the videos coming! I'm learning so much! Your teaching style is truely amazing!

[DrChrisTisdell]

Hi Jarshiker and thanks for commenting. If you get the chance, then I invite you to drop in one on of my lectures - they're a really different vibe to these vids.

BTW, I can see from your channel that you're multi-talented! Awesome!

[QuanSai]

Perfect.

[DrChrisTisdell]

Wow! That's quite a comment! :-)

Best wishes

Chris