[理工] [工數]-Fourier Transform
1.
x(t) = 1 , |t| < 1/2
x(t) = 0 , otherwise
∞
X(jw) = ∫ x(t) e^(-jwt) dt
-∞
Find
∞
∫ |X(jw)|^2 dw = ?
-∞
∞
2.Let z(t) = x(t)*y(t) = ∫ x(τ)y(t-τ)dτ
-∞
(a)Prove the area under z(t) is the product of the areas under x(t) and y(t)
over the interval -∞ < t < ∞
(b)Give an interpretation
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