Dirac delta function evaluation

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SUMMARY

The discussion focuses on evaluating the integral of the function (x² + 2x + 1) multiplied by the Dirac delta function δ(2x) over the interval from -4 to 4. The key insight provided is to change variables by letting y = 2x, which simplifies the evaluation of the integral using the properties of the Dirac delta function. This method effectively demonstrates how to handle integrals involving delta functions by transforming the variable appropriately.

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vwishndaetr
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I do not know how to execute the problem with the 2x in the problem.

Evaluate the integral:

[tex] <br /> \int_{-4}^{4} (x^2+2x+1) \delta(2x) dx <br /> [/tex]
 
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Simplest way would be to change variables. Write 2x = y, and you know what integral over [tex]\delta(y)[/tex] gives right?
 
Yup i got it. Thanks.
 

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