Partial derivatives

[@Han-Wook]

These vids are great... almost makes me want to save the 1:30 back and forth comute to the uni. and stay at home for a clearer lesson. Thanks!

[@xoppa09]

31:08 What do you mean there are two tangent lines? I see only one tangent line at the point (1,2,5)

[@stluke324]

Thank you Dr Tisdell. You saved my life with this.

[@DrChrisTisdell]

I am very glad it was useful to you.

[@5Ronza]

man, you're amazing! Thank you so much for uploading this

[@DrChrisTisdell]

My pleasure!

[@andrewsmith6649]

Excellent Chris (Simon) :)

[@muhammadsadiq3696]

brilliant sir ,you are great.

[@A2Kaid]

Now this is the kind of rigorous shit we need.

[@ILikeWeatherGuy]

This is awesome

[@mummukherjee9137]

thank u very much sir

[@ISaacffds]

good

[@stluke324]

Yes I am Ghanaian..Good catch. lol

[@1603stanley]

you must be a ghanian,i like your name..lol

[@DrChrisTisdell]

My pleasure!