How to write factorial in matlab

[adnan jahan]

Dear Fellows,

I want to write rational numbers factorial in my MATLAB program

for integers factorial command is

factorial(n)

but for rational numbers such as 0.1 or 0.2
this command is not working can anyone guide me to solve this issue ?

Regards

 

[Dr Transport]

Have you tried to find the integral formulation of the factorial function... from there it should be fairly easy to program it in using Gauss-Laguerre polynomials...

 

[adnan jahan]

Yess I found function for Integer that is ,
for n=8
factorial(8)
but I need for any (0.1)
can you please write it here so that I can understand and use

 

[TheoMcCloskey]

Lookup the Gamma function

 

[alphy]

,



Hello,

To write factorial for rational numbers in MATLAB, you can use the built-in function gammaln(x). This function calculates the natural log of the gamma function, which is equivalent to the factorial of x-1. So, to get the factorial of a rational number, you would calculate gammaln(x+1) and then take the exponential of that result. For example, to find the factorial of 0.2, you would use the following code: exp(gammaln(0.2+1)).

Hope this helps! Let me know if you have any further questions.

Best,