Maple question: defining functions as inverse Fourier transforms

[hunt_mat]

Hi,

I have a a Fourier transformed variable $\hat{\eta}(k)$ defined as the following:

$$\hat{\eta}(k)=\frac{e^{-k^{2}}\tanh k}{kU^{2}+(-B+\Omega U+E_{b}|k|-k^{2})\tanh k}$$

The parameters $U,B,\Omega,E_{b}$ have all been defined previously. I have naively tried the following:

$$\eta :=\textrm{invfourier}(ETA,k,x)$$

This doesn't work. What am I doing wrong?

Cheers

 

[MathematicalPhysicist]

First thing what is ETA?, you should write $\hat{\eta}$ in this place.
Second, if you read the help in maple then you should add at the beginning of the code: "

"
I assume there's no easy term for the inverse Fourier transform of this expression, but you can get an implicit expression with integral by adding in the last place the syntax: "NO_INT".

I also assume that you read already the help so I don't really no where you get it wrong, perhaps show us your code?

BTW, I find mapleprimes.com as the best place for my questions regarding maple (I am not advertising it's just my experience).