Question 9 For each signal a[n] below, determine if the R{x[n]}, i.e., the real part of the function a[n], is an oscillatory function, i.e., a function having an infinite number of local maxima/minima. x [n] = 0.5" μ[n] x [n] = (-0.5)" u [n] 2 [n] = el-0.5+0.59)n n x [n] = e(0.5j)nμµ [n] x [n] = e(0.5+0.5)nu [n] Provide as your answer the total count of those signals where R{x[n]} is oscillatory. 5 3 2 1

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Question 9
For each signal a[n] below, determine if the R{x[n]}, i.e., the real part of the
function a[n], is an oscillatory function, i.e., a function having an infinite number of
local maxima/minima.
x [n] = 0.5"u [n]
x [n] = (-0.5)" u [n]
x [n] = e(-0.5+0.5j)nu[n]
x [n] = e(0.5j)nu [n]
x [n] = e(0.5+0.5)nu [n]
Provide as your answer the total count of those signals where R{a[n]} is oscillatory.
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O
4
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Transcribed Image Text:Question 9 For each signal a[n] below, determine if the R{x[n]}, i.e., the real part of the function a[n], is an oscillatory function, i.e., a function having an infinite number of local maxima/minima. x [n] = 0.5"u [n] x [n] = (-0.5)" u [n] x [n] = e(-0.5+0.5j)nu[n] x [n] = e(0.5j)nu [n] x [n] = e(0.5+0.5)nu [n] Provide as your answer the total count of those signals where R{a[n]} is oscillatory. O O 4 2 1 O
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