I have seen two formulations of the dirac delta function with the Fourier transform. The one on wikipedia is(adsbygoogle = window.adsbygoogle || []).push({});

[tex] \int_{-\infty}^\infty 1 \cdot e^{-i 2\pi f t}\,dt = \delta(f) [/tex]

and the one in my textbook (Robinett) is

[tex] 1/2\pi \int_{-\infty}^\infty 1 \cdot e^{-i f t}\,dt = \delta(f) [/tex]

I do not understand how they are equivalent? How can you just take the 2pi out of the integral?

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# Fourier transform formulation of the dirac delta

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