Differentiating With respect To x

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    Differentiating
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Discussion Overview

The discussion revolves around the concept of differentiation, specifically differentiating functions with respect to the variable x. Participants explore the meaning of derivatives, particularly the derivative of x with respect to x and the derivative of y with respect to x, focusing on the implications of these operations.

Discussion Character

  • Conceptual clarification, Technical explanation

Main Points Raised

  • One participant questions the meaning of differentiating x with respect to x, wondering if it implies understanding how x changes with itself.
  • Another participant states that the derivative dx/dx equals 1.
  • A third participant explains that differentiating y with respect to x involves comparing the rates of change of y and x, concluding that the derivative of x with respect to x is also 1 due to their rates of change being the same.
  • A later reply expresses appreciation for the clarification provided by the previous participants, indicating that their thoughts have been confirmed.

Areas of Agreement / Disagreement

Participants generally agree on the mathematical result that dx/dx equals 1, but there is some uncertainty regarding the conceptual understanding of differentiation itself, particularly in the context of how x changes with respect to itself.

Contextual Notes

Some assumptions about the definitions of derivatives and the context of their application may be implicit in the discussion, which could affect the interpretation of the concepts presented.

Bashyboy
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So, when you differentiate a function, specifically an explicit function, where y is a function of x, you are differentiating each term with respect with x. Well, when you differentiate x with respect with x, does that mean you are trying to find out how x changes with x? What does that mean anyways? And when you differentiate y with respect to x, does that mean you are trying to figure out how y is changing with each value of x?
 
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I am confused as to what you are looking for. However dx/dx = 1.
 
Yes, when you find "the derivative of y with respect to x" you are comparing the (instantaneous) rate of change of y compared to the instantaneous rate of change of x or "how fast y changes as x changes". The "derivative of x with respect to x", then, compares how fast x changes to how fast x changes and, because obviously, they change at the same rate, that derivative is, as mathman says, 1.
 
Oh, brilliant. Thank you both. That has confirmed my thoughts.
 

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