Differentiating Complex Functions with Respect to x

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Discussion Overview

The discussion revolves around the differentiation of a complex function with respect to x, specifically focusing on the terms 5√x and 1/2x^2. Participants explore the correct interpretation and simplification of these terms in the context of differentiation.

Discussion Character

  • Technical explanation
  • Mathematical reasoning

Main Points Raised

  • One participant attempts to differentiate the expression dy = 3x^2 - 5√x + 1/2x^2 and expresses confusion about the terms involved.
  • Another participant clarifies that 5√x should be interpreted as five times (x)^{1/2}, not (x)^{1/5}.
  • There is ambiguity regarding the term 1/2x^2, with participants discussing whether it is meant to be interpreted as (1/2)x^2 or 1/(2x^2).
  • One participant confirms that the term is indeed 1/(2x^2) and provides the simplification to (1/2)(x^-2).
  • Participants clarify that (2x)^-2 would result in (1/4)(x^-2), which is distinct from the earlier term.

Areas of Agreement / Disagreement

Participants generally agree on the interpretation of the terms once clarified, but there is initial confusion regarding the correct forms of the expressions. The discussion does not resolve the broader implications of differentiation but focuses on the specific terms involved.

Contextual Notes

There are limitations in the clarity of the original expressions, particularly regarding the notation used for the terms, which led to initial misunderstandings.

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Differentiate with respect to x

dy = 3x^2 - 5√x + 1/2x^2
dx

__________________________________________

I don't understand how to differentiate this part: 5√x + 1/2x^2. I think changing it to indices form would be: x^1/5 + (2x)^-2?

How can it be worked out? :confused:
 
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[tex]5\sqrt{x}[/tex] is not [tex](x)^{\frac{1}{5}}[/tex]. It is five times [tex](x)^{\frac{1}{2}}[/tex].

The last term is a bit ambiguous, the way you've typed it. Is it [tex]\frac{1}{2}x^2[/tex] or [tex]\frac{1}{2x^2}[/tex]? Anyway, neither cannot be simplified to (2x)^-2.
 
neutrino said:
[tex]5\sqrt{x}[/tex] is not [tex](x)^{\frac{1}{5}}[/tex]. It is five times [tex](x)^{\frac{1}{2}}[/tex].

That makes more sense. :biggrin:

neutrino said:
The last term is a bit ambiguous, the way you've typed it. Is it [tex]\frac{1}{2}x^2[/tex] or [tex]\frac{1}{2x^2}[/tex]? Anyway, neither cannot be simplified to (2x)^-2.

It's [tex]\frac{1}{2x^2}[/tex]
 
Anived said:
It's [tex]\frac{1}{2x^2}[/tex]

It's then (1/2)(x^-2). (2x)^-2 would be (1/4)(x^-2).
 
neutrino said:
It's then (1/2)(x^-2). (2x)^-2 would be (1/4)(x^-2).

Ok. I understand. Thanks for the help. :biggrin:
 

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