# easy way to convolve a function

by thomitsu
Tags: convolve, function
 P: 6 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
 P: 6 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???
 Sci Advisor P: 5,891 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.
P: 6

## 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!