Difference between revisions of "Homework 4 ECE438F09" - Rhea

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-==Scaling of the Dirac Delta (Impulse Function)==
-<math>\displaystyle\delta(\alpha f)=\frac{1}{\alpha}\delta(f)</math> <math>\textstyle{     for   }\alpha>0</math>
-'''Mini Proof'''
-<math>\int_{-\infty}^{\infty}\delta(x)dx = 1</math>
-'''Let''' <math>\displaystyle y=\alpha x</math>
-<math>dx=\frac{dy}{\alpha}</math>
-<math>\displaystyle\int_{-\infty}^{\infty}\delta(\alpha x)dx=\int_{-\infty}^{\infty}\delta(y)\frac{dy}{\alpha}=frac{1}{\alpha}</math>

Latest revision as of 08:06, 20 September 2009