Definition  
For a nonperiodic function , the corresponding Fourier Integral can be written as: where: Or, by plugging and into the first equation, one can write the Fourier Integral of in a single expression:

Definition  
For a nonperiodic function , the corresponding Fourier Integral can be written as: where: Or, by plugging and into the first equation, one can write the Fourier Integral of in a single expression:
