Re: Putting an If in my function

*To*: mathgroup at smc.vnet.net*Subject*: [mg101063] Re: Putting an If in my function*From*: Jens-Peer Kuska <kuska at informatik.uni-leipzig.de>*Date*: Tue, 23 Jun 2009 07:04:27 -0400 (EDT)*References*: <h1neun$8rk$1@smc.vnet.net>

Hi, Function[{a, g, f, x, d, w}, If[g == w, d + a*f*x, d (1 + (E^g - E^w)/f)^(f x) + ( a (-1 + (1 + (E^g - E^w)/f)^(f x)) f)/(E^g - E^w)]] ? Regards Jens Lobotomy wrote: > Hi, this is my function > > #5 (1 + ((E^#2 - 1) - (E^#6 - > 1))/#3)^(#3*#4) + (#1*((1 + (((E^#2 - 1) - (E^#6 - > 1))/#3))^(#3*#4) - > 1))/(((E^#2 - 1) - (E^#6 - 1))/#3) &[a, g, f, x, d, w] > > > in the case when w==g the denominator equals zero. > > in this case i would like to rewrite the formula above to the much > simpler > d+a*n. How is this done? I've tried > > If[w == g, % = d + a*n], but this is not working. Another thing is > where to put the "If" >