## easy way to convolve a function

Hallo there!

I was wondering wether there is an easy way to convolve a function with itself.
For example is ther an easy formula or something that gives directly the result?
thanks in advance

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 for example, for correlation... The correlation of a function with itself is called its autocorrelation In this case the correlation theorem becomes the transform pair – This is the Wiener-Khinchin Theorem Corr(g,g)↔G( f )G*( f ) = G( f )^2 Is there something like that for convolution???
 Recognitions: Science Advisor I don't know if it helps any, but take the Fourier transform of the function, square the transform, and take the inverse transform of the result.

## easy way to convolve a function

Oh god! This is so complicated( my function is a squared bessel function)!! I will try it though.thank you so much!

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