Lecture on Fourier Transform of Sinc Squared Function

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Fourier Transform of Sinc Squared Function is explained in this video. Fourier Transform of Sinc Squared Function can be dermine easily by using the duality property of Fourier transform. We can also find the Fourier Transform of Sinc Squared Function using the formula of Fourier transform. Fourier Transform of triangular pulse is sinc Squared function and Fourier Transform of Sinc Squared Function is triangular pulse.
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What is the FT of the following ?
1). Expo(-at).u(t-a) 

2). Expo[-(t-a)].u(t-a)

3). Expo-(t-a).u(t)

4). Expo(-at). Rect[(t+1)/β]

5.) Expo-(t+α). Rect[(t+1)/β]
Thanks in advanced

fodilanisbouksani
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Thanks you, sir. Btw, you mispronounce the word "square", maybe you`d like to correct it.

teymurasgarli
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You literally just pulled that tri(t) out of nowhere, didn't prove anything. Also you didn't show the FT in the w-domain, no one every asks for it in the f-domain

rationalthinker