Can we Simplify the Integration of Q Function with a Change of Variable?

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Discussion Overview

The discussion revolves around the simplification of an integral involving the Q function, specifically exploring whether a change of variable can lead to a different representation of the integral. The context includes mathematical reasoning and integration techniques.

Discussion Character

  • Mathematical reasoning
  • Technical explanation

Main Points Raised

  • One participant asks if the integral ∫0,4T(Q(2∏*(0.3) * ((t-5T/2)/(T√(ln2)))dt can be simplified into another Q function.
  • Another participant questions the definition of the Q function, indicating a need for clarification.
  • A third participant provides a link to a Wikipedia page for information about the Q function.
  • A later reply presents a mathematical identity involving the integral of the Q function and suggests that the original integral can be approached through a change of variable.

Areas of Agreement / Disagreement

Participants have not reached a consensus on the simplification of the integral. There are multiple viewpoints regarding the approach to the problem, with some seeking clarification on the Q function itself.

Contextual Notes

There may be limitations in understanding the Q function and its properties, as well as the assumptions underlying the proposed change of variable in the integral.

myarram
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can we simplify the below equation into another Q function?

∫0,4T(Q(2∏*(0.3) * ((t-5T/2)/(T√(ln2)))dt
where T is a constant

I have attached the equation in the attachements
 

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myarram said:
can we simplify the below equation into another Q function?

∫0,4T(Q(2∏*(0.3) * ((t-5T/2)/(T√(ln2)))dt
where T is a constant

I have attached the equation in the attachements

What is a Q function?
 
$$\int_0^x \mathrm{Q}(t) \, \mathrm{dt}=\frac{1}{2}\int_0^x \mathrm{erfc} \left( \frac{t}{\sqrt{2}} \right) \, \mathrm{dt}=\frac{1}{2} x \, \mathrm{erfc} \left(\frac{x}{\sqrt{2}}\right)+\frac{1}{\sqrt{2 \pi}}\left(1-e^{-x^2/2}\right)= x \, \mathrm{Q} \left( x \right)+\frac{1}{\sqrt{2 \pi}}\left(1-e^{-x^2/2}\right)$$
which can be shown by integration by parts
your integral can then be found by change of variable
 

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