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Asked Feb 9, 2020
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Please solve all parts!

Problem 2.4 Find and sketch the Fourier transforms for the following signals.
(a) u(t) = (1 – |t)4-1,1j().
(b) v(t) = sinc(2t )sinc(4r).
(c) s(t) = v(t) cos(200r t).
(d) Classify each of the signals in (a)–(c) as baseband or passband.
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Problem 2.4 Find and sketch the Fourier transforms for the following signals. (a) u(t) = (1 – |t)4-1,1j(). (b) v(t) = sinc(2t )sinc(4r). (c) s(t) = v(t) cos(200r t). (d) Classify each of the signals in (a)–(c) as baseband or passband.

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Expert Answer

Step 1

We are authorized to answer three subparts at a time, since you have not mentioned which part you are looking for, so we are answering the first three subparts, please repost your question separately for the remaining subpart.

(a).

The expression for the function is given as:

Electrical Engineering homework question answer, step 1, image 1

Step 2

Sketching the graph for the above function:

Electrical Engineering homework question answer, step 2, image 1

Step 3

The above signal is the baseband signal and can also be represented in the form of triangular function.

Now evaluating the Fourier transform using its property:

Electrical Engineering homework question answer, step 3, image 1

...

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