Appendix E

Definition of a Few Special Functions

  1. Unit-step function (Figure E.1):

    image

    Figure E.1

  2. Signum function (Figure E.2):

    image

    Figure E.2

  3. Rectangular function (Figure E.3):

    image

    Figure E.3

  4. Triangular function (Figure E.4):

    image

    Figure E.4

  5. Sinc function (Figure E.5):

    image

    Figure E.5

  6. Delta function (Figure E.6):

    image

    Figure E.6

Introduction to Random Signals and Noise W. van Etten © 2005 John Wiley & Sons, Ltd

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