#### Continuous time Fourier transform

As → , for any finite time interval

As a polar form

If is real, magnitude is even function of and phase is an odd funtion of

Fourier transform

Inverse Fourier transform

Dot Product → orthogonal → below functions → these properties

Mixing linearity and time shifting make it easy to compute complex function’s FT like this

CTFT Properties

#### Derivation 하지말고 외워야

Fourier Transform Examples