new defint.lisp bug - was: new defint.lispandradexpand:false?

"Are you claiming that you have a function that is not continuous but is an 
antiderivative of exp(x^7)?"

No, I am claiming that this function below is piecewise defined but 
continuous anyway and is real valued and is an antiderivative of exp(x^n) 
when n > 0, n is real and x is real.  When n is an odd integer > 0 then it 
also is real valued antiderivative for all real x both positive and 
negative.  I used Aleksas Domarkas' answer for the positive piece, I just 
spliced the negative and positive answers into one function, which could 
also be done with "if then else" if you like that better.  My goal was to 
get one expression for the antiderivative which was true and real valued for 
all x and integer n>2.  I succeeded.

integrate(exp(x^n),x);
(-gamma_incomplete(1/n,-x^n)*%e^-(%i*%pi/n)/n+gamma(1/n)*%e^-(%i*%pi/n)/n+gamma(1/n)/n)*(signum(x)+1)/2
+gamma_incomplete(1/n,-x^n)*(1-signum(x))/(2*n)

Rich

-----Original Message----- 
From: Rupert Swarbrick
Sent: Thursday, January 12, 2012 7:45 PM
To: maxima at math.utexas.edu
Subject: Re: [Maxima] new defint.lisp bug - was: new 
defint.lispandradexpand:false?

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