does anybody know a way to simplify common factors above and below a fraction   
   in maxima? I have been unable to simplify sqrt(pi) / sqrt(pi) in the following   
   commands (maxima-5.37.2 in Fedora Linux 23)   
      
   kill(all)$   
      
   assume(sigma > 0, tau > 0, t0 > 0)$   
      
   define(pulse(t, tau, sigma, t0), ratsimp(integrate(1/tau*exp(-(t   
   -t0)/tau)*1/(sqrt(2*pi)*sigma)*exp(-(tp-t)^2/(2*sigma^2)), tp, t0, inf)));   
      
   here I have been unable to simplify the above expression   
      
   integrate(pulse(t,tau,sigma, t0), t, -inf, inf);   
      
   here I get sqrt(pi) / sqrt(pi) as result!   
      
   regards,   
   --   
   Alberto   
      
   --- SoupGate-Win32 v1.05   
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