Let F(ω) be the Fourier transform of a function f(t), then F(0) is
A. $$\int\limits_{ - \infty }^\infty {f\left( t \right)dt} $$
B. $$\int\limits_{ - \infty }^\infty {{{\left| {f\left( t \right)} \right|}^2}dt} $$
C. $$\int\limits_{ - \infty }^\infty {{{\left| {tf\left( t \right)} \right|}^2}dt} $$
D. $$\int\limits_{ - \infty }^\infty {tf\left( t \right)dt} $$
Answer: Option A
This Question Belongs to Electronics And Communications Engineering >> Signal Processing
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