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Chapter 2

Chapter 2. Updated 6/6/2014. Time reversal:. X(t). Y=X(-t). Time Reversal. Time scaling. Example: Given x ( t ), find y ( t ) = x (2 t ). This SPEEDS UP x ( t ) (the graph is shrinking ) The period decreases!. X(t). Y=X(at). Time Scaling. What happens to the period T ? .

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Signal Characteristics Common Signal in Engineering Singularity Function

Signal Characteristics Common Signal in Engineering Singularity Function. Section 2.2-2.3. Signal Characteristics. Review Even function Odd function Periodic Signal. Represent x e (t) in terms of x(t). X e (t) X(t)= X e (t)+X o (t) X e (t)=X(t)-X o (t) Xo(t)=-Xo(-t)

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Chapter 2

Signal Characteristics Common Signal in Engineering Singularity Function