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Fourier Transform and its basic Properties:

Fourier Transform:

$ \ X(f) = \int_{-\infty}^{\infty} x(t)\ e^{- j 2 \pi f t}\,dt, $  

Inverse Fourier Transform:

$ f(x) = \int_{-\infty}^{\infty} X(f)\ e^{j 2 \pi f t}\,df, $  
                                                                                 for every real number f & x.

Basic Properties of Fourier Transforms:

Linearity:

Time Shifting:

Frequency Shifting:

Time Scaling:

Convolution:

Alumni Liaison

Basic linear algebra uncovers and clarifies very important geometry and algebra.

Dr. Paul Garrett