shifting theorem

shifting theorem

[′shift·iŋ ‚thir·əm]
(mathematics)
If the Fourier transform of ƒ(t) is F (x), then the Fourier transform of ƒ(t-a) is exp (iax) F (x).
If the Laplace transform of ƒ(x) is F (y), then the Laplace transform of ƒ(x-a) is exp (-ay) F (y).