# Thread: Inverse fourier Transform of 1/(1+.5jw)

1. ## Inverse fourier Transform of 1/(1+.5jw)

Hi the inverse fourier transform of

1/(alpha+jw) is u(t)exp(-alpha x t)

but what if there is some term with jw like 1/(1+.5jw)
how it will be catered
I could not see such example in any fourier transform table

Plz guide me

2. ## Re: Inverse fourier Transform of 1/(1+.5jw)

Originally Posted by moonnightingale
Hi the inverse fourier transform of

1/(alpha+jw) is u(t)exp(-alpha x t)

but what if there is some term with jw like 1/(1+.5jw)
how it will be catered
I could not see such example in any fourier transform table

Plz guide me
Just build the fraction by multiplying by $\frac{2}{2}$

$\frac{1}{1+.5jw}=\frac{2}{2}\cdot \frac{1}{1+.5jw}=\frac{2}{2+jw}$

Just remember that the inversve transform is linear so

$F^{-1}\left( \frac{2}{2+jw} \right) =2F^{-1}\left( \frac{1}{2+jw} \right)$

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# inverse fourier transform for (1-ae^-jw)^-1

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