How to Find the Average Value of a Function Over a Given Interval?

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Homework Help Overview

The discussion revolves around finding the average value of the function f(t) = (t² - 1)e^(-0.5t) over the interval [0, 6]. Participants are exploring the application of integration techniques to solve this problem.

Discussion Character

  • Exploratory, Mathematical reasoning, Problem interpretation

Approaches and Questions Raised

  • Participants discuss the method of integration and the potential use of substitution. There is mention of reaching a roadblock in the process. Some suggest trying different techniques, including integration by parts.

Discussion Status

The discussion is ongoing, with participants sharing their attempts and suggesting alternative methods. There is no explicit consensus on the approach to take, but several lines of reasoning are being explored.

Contextual Notes

Participants are working within the constraints of a homework assignment, which may limit the information they can use or the methods they can apply.

KingKai
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Homework Statement



Determine the average value of the following function over the interval [0,6]

f(t) = (t2-1)e-0.5t

Homework Equations



1/(b-a) ∫ f(x) = {f(x)}

The Attempt at a Solution



Substitution?

let u = (t2-1)

du/dt = 2t

du/2t = dt

1/(6) ∫ u e-0.5t (du/2t)And here, I reach a roadblock.
 
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so to get the average of the function you integrate the function and then divide by the interval length.
 
Try a different technique.
 
KingKai said:

Homework Statement



Determine the average value of the following function over the interval [0,6]

f(t) = (t2-1)e-0.5t

Homework Equations



1/(b-a) ∫ f(x) = {f(x)}

The Attempt at a Solution



Substitution?

let u = (t2-1)

du/dt = 2t

du/2t = dt

1/(6) ∫ u e-0.5t (du/2t)

And here, I reach a roadblock.
Use integration by parts, twice.
 

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