engineering recuitment NIELIT Scientific Assistant Mock Test 2025 Signals and Systems Fourier Transform
Let F(ω) be the Fourier Transform of a function f(t). The F(0) is
1
\(\int\limits_{ - \infty }^\infty {f\left( t \right)} dt\)
2
\(\int\limits_{ - \infty }^\infty {{{\left| {f\left( t \right)} \right|}^2}dt}\)
3
\(\int\limits_{ - \infty }^\infty {{{\left| {t \cdot f\left( t \right)} \right|}^2}dt}\)
4
\(\int\limits_{ - \infty }^\infty {t \cdot f\left( t \right)dt}\)