Apply the duality property to the appropriate pair in Table 7.1 (Fourier Transforms Table)

Question:

Apply the duality property to the appropriate pair in Table 7.1 (Fourier Transforms Table) to show that

(a) 1/2[δ(t)+j/πt] ⇔ u(ω)

(b) δ(t+T)+δ(t-T) ⇔ 2cosTω

(c) δ(t+T)-δ(t-T) ⇔ 2jsinTω

Answer:

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