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ECE 3500 Signals and Systems Quiz Solutions Quiz 2
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UNIVERSITY OF UTAHDEPARTMENT OF ELECTRICAL & COMPUTER ENGINIEERING
ECE BEOO FUNDAMENTALS OF SIGNALS AND SYSTEMS September 8, 2011
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L. A(t) is generated from r(t) using a series of transformations as shown in the figure.
-9
$(t): o€ -:) < (-rt*>{(t): o(t -:) < eu t-e) ^;- *t_ {_{ _6:What is the mathematical expression that relates the output y(t) of the overall system
to its input signal c(t). 3(+N { ,( (+ *})We wish to implement the same system using a seriEs of three traasformations or less
from scaling along the time a>cis, reflection about the y axis and time shifting. How willyou do this?
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(b)
'."i*-+''{( +-) " t"\ t^-J*r{b;L
/ -4r.
'/. "x i:1, *9_\''"?* *l
Compressalongthetime axisby
a factorof 2
Expand along thetime alds by a
factorof 4
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