F(ω)=F[f(t)]=∫−∞∞f(t)e−iwtdt1{\displaystyle F(\omega )={\mathcal {F}}[f(t)]=\int _{-\infty }^{\infty }f(t)e^{-iwt}\,dt1}
![{\displaystyle F(\omega )={\mathcal {F}}[f(t)]=\int _{-\infty }^{\infty }f(t)e^{-iwt}\,dt1}](/index.php?title=%E7%89%B9%E6%AE%8A:MathShowImage&hash=40d0e8b232e6e0354aa41eb069d74b7f&mode=mathml)