When can one Change order of derivatives?

  • Context: Undergrad 
  • Thread starter Thread starter Charanjit
  • Start date Start date
  • Tags Tags
    Change Derivatives
Click For Summary
SUMMARY

The discussion centers on the interchangeability of mixed partial derivatives, specifically the equality d/dz(dp/dx) = d/dx(dp/dz). This principle is established under the conditions of continuity and differentiability of the function involved. Participants confirm that this concept is often overlooked in standard calculus and differential equations courses, highlighting its importance in advanced mathematical applications.

PREREQUISITES
  • Understanding of calculus, specifically partial derivatives
  • Familiarity with the concept of continuity in functions
  • Knowledge of differentiability and its implications
  • Basic grasp of mixed partial derivatives
NEXT STEPS
  • Study the conditions for the equality of mixed partial derivatives
  • Explore the implications of continuity and differentiability in multivariable calculus
  • Learn about theorems related to mixed partial derivatives, such as Clairaut's theorem
  • Review applications of mixed partial derivatives in physics and engineering
USEFUL FOR

Students of mathematics, educators teaching calculus and differential equations, and professionals applying advanced calculus in fields such as physics and engineering.

Charanjit
Messages
48
Reaction score
0
Here is an example...

d/dz(dp/dx) = d/dx(dp/dz)

I don't remember learning this in my calculus or differential equations classes unless it was called something else.
 
Physics news on Phys.org
Those would be mixed partial derivatives.
Look it up.

The short answer is: almost always.
 
Last edited:
Hmm...ok never knew that. Thanks.
 

Similar threads

  • · Replies 5 ·
Replies
5
Views
2K
  • · Replies 7 ·
Replies
7
Views
603
  • · Replies 4 ·
Replies
4
Views
4K
  • · Replies 11 ·
Replies
11
Views
2K
  • · Replies 6 ·
Replies
6
Views
4K
  • · Replies 12 ·
Replies
12
Views
3K
  • · Replies 3 ·
Replies
3
Views
2K
  • · Replies 22 ·
Replies
22
Views
3K
  • · Replies 22 ·
Replies
22
Views
4K
  • · Replies 2 ·
Replies
2
Views
2K