[ROOT] Factorial(10) gives bad-numerical-expression-error

From: Bernd Reinhold (bernd.reinhold@cern.ch)
Date: Tue Jul 13 2004 - 12:38:15 MEST


binomial1 = new TF1("binomial1", "[1]*(Factorial(10))/(Factorial(x))/(Factorial(10-x))*power([0],x)*

I get the following error message, when typing the function above in CINT

*ERROR 30 : 
Bad numerical expression : "Factorial(10)"
Error in <TF1::TF1>: function: binomial1/[1]*(Factorial(10))/(Factorial(x))/(Factorial(10-x))*
power([0],x)*power(1-[0],10-x) has 0 parameters instead of 1

And can I put some constraints on x by defining it as 'Int_t x;' before I define the function? Does TF1 recognize the x in its formula as the x defined before as Int_t?

Thank you, Bernd.

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