A possible way to integrate dx^2?

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Discussion Overview

The discussion revolves around the integration of expressions involving differentials raised to a power, specifically the term ##dx^2##. Participants explore the implications of interpreting this notation and its validity within the context of integral equations.

Discussion Character

  • Debate/contested, Technical explanation, Conceptual clarification

Main Points Raised

  • One participant presents a formula related to an integral equation and claims it can be proven.
  • Another participant argues that the expression is either meaningless or false, depending on the interpretation of ##dx^n## as either ##(dx)^n## or ##d(x^n)##, providing a counterexample for the latter interpretation.
  • A different participant questions the representation of "x," suggesting that it appears as an n-dimensional vector on one side of the equation and as a number on the other.
  • Another participant references an example problem from the original paper to provide context.
  • One participant speculates that the source of the original problem may use a different convention for multiple integration, likening it to Cauchy's formula.

Areas of Agreement / Disagreement

Participants express differing interpretations of the notation and its implications, with no consensus reached on the validity or meaning of the expressions discussed.

Contextual Notes

There are unresolved assumptions regarding the definitions of the terms used, particularly the interpretation of differentials and their powers, which may affect the validity of the claims made.

depther
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While reading a proof for an integral equation I came across this formula:
http://imgur.com/K8RQlOc

It was claimed that it can be proven..
 
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If my calculations are correct, it's either meaningless or false.
It's meaningless if ##dx^n## means ##(dx)^n##
It's false if ##dx^n## means ##d(x^n)##. Counterexample is ##n=2,\ f(x)\equiv 1##. This gives LHS=##t^2-a^2## and RHS=##\frac{1}{2}(t-a)^2##
 
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I wonder what "x" is supposed to represent. On the left x appears to be an n dimensional vector but on the right it is a number.
 

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