Multivariable Calculus 13 | Schwarz's Theorem

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This video is about the symmetry of the second-order partial derivatives.

#MultivariableCalculus
#Analysis
#Integral
#Calculus
#Derivatives
#Mathematicspdt
#Lagrange

(This explanation fits to lectures for students in their first year of study: Mathematics for physicists, Mathematics for the natural science, Mathematics for engineers and so on)

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Nice video ! We used this theorem a lot back when I was taking physics lessons, but we never proved it although the proof is so straightforward ! I see that it can easily be extended for higher derivatives too with the exact same argument

StratosFair
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ooh Schwartz's theorem! also I hope you talk about the total derivative and nth order total derivatives

mastershooter
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As usual, great content.
Do you intend to cover line / surface integrals / Stokes and Divergence theorems / implicit function theorem?

eitancohen
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The eta that you get for v(h1, h2) and v(h1, 0) could be different. So, IMO the proof is not correct. Please correct me if I'm wrong!

mayankjangid
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Does it mean that solving a partial equation:
Uxx + Uyx = 0
Is the same as solving
Uxx + Uxy = 0 ??
d/dx(Ux+Uy)=0
Ux+Uy-c=0

whatitmeans
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It is also known as "clairaut's theorem."

sayanjitb