Describing Surfaces Explicitly, Implicitly & Parametrically // Vector Calculus

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How can we describe two-dimensional surfaces, even if they are embedded in 3D space? Similar to the three ways to describe curves in 2D, we can do this explicitly, implicitly, or parametrically. In the case of parametrically we get TWO parameters and choose them to try and naturally represent symmetries in the space. We specifically focus on the example of the cone and see how we can use cylindrical coordinates as a base to build out a parameterization of this space.

0:00 Intro to Surfaces
1:23 Descriptions of Curves
3:24 Descriptions of Surfaces
4:24 Cone Example

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I've always thought of surfaces as being 3D. But in actual fact they are still 2D, living in 3D world. Learn something every day. Brilliant.

DJ-yjvg
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You know what? I'm stunned how much effort you've put into these playlists just for people like me. You did this on your own and you did this without any other reason than to teach people. Thank you so much. Without people like you this world would be a much darker place.

actualBIAS
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It baffles that you don't have more subscribers. Your work is very helpful

worldclassmediocre
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I’ve taken Vector calc ages ago. I did well and finished fine, but felt our instructor always deprived his explanations of the intuition or logic. This is simply amazing

tomatrix
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This is simply the best explanation I have encountered. Bravo!

andersongoncalves
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First 4 minutes cleared my so many doubts. Thank you Trefor

Deepak-pixx
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Oh My God! How Brilliant is this explanation!

raajdhanwani
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simply the best calc prof out there! thank u dr. trefor!!

irenepadre
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The animations really help in visualizing surfaces. Thank you so much!

shivkarj
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Very nice image of the meaning of parameterization at the end of the video. Such elegance in thought.

briandwi
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Wonderful!!! You have exposed the explanations which remain hidden: 2D surface to 3D surface parameterisation.

vkjmathstuition
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I really want to thanks you for this videos, you increase my knwoledge in vector calculus and I love it! you are the best

guifzas
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Just what I needed for this week’s assignment! Thanks!

joonahulkkonen
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This really helped a lot! Our professor didnt teach much and it was really confusing before this video!!

bensonchou
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Highly insightful, keep up the good work. Cheers!

Numerically_Stable
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THOSE VIDEOS ARE INCREDIBLES! Gave me a lot of great insights I''ve never had!

xandiczr
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Best explanation ever. I am very appreciated your work.

siwasoontreerat
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If you read this, you've helped me a lot. Thank you!!!

pedrogaleano
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brilliant visualization and demonstration!

bnana-rt
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i really loved that last point of view! It would have been nice if you put some points in the r-theta axes and see where is it on the x-y-z space

nice video!!

carlosraventosprieto