Re: Abs in the denominator

*To*: mathgroup at smc.vnet.net*Subject*: [mg128560] Re: Abs in the denominator*From*: Bill Rowe <readnews at sbcglobal.net>*Date*: Fri, 2 Nov 2012 23:54:00 -0400 (EDT)*Delivered-to*: l-mathgroup@mail-archive0.wolfram.com*Delivered-to*: l-mathgroup@wolfram.com*Delivered-to*: mathgroup-newout@smc.vnet.net*Delivered-to*: mathgroup-newsend@smc.vnet.net

On 11/2/12 at 12:45 AM, didi.vela at gmail.com (Dieter Ernst) wrote: >I have an expression with Abs applied to the entire denominator: >0.5/Abs[(C * R * omega)/(-1 + C * L * omega^2)] >(Just as an example, the function in Abs could also be another one). >How can I transform it to an expression with Abs wrapping the entire >Fraction, such as: >Abs[0.5/((C * R * omega)/(-1 + C * L * omega^2))] >... and then to: >Abs[(0.5 * (-1 + C * L * omega^2) / (C * R * omega)]] In[4]:= 0.5/Abs[(C*R*omega)/(-1 + C*L*omega^2)] /. 0.5/Abs[b_] :> Abs[Simplify[.5/b]] Out[4]= Abs[(0.5*C*L*omega^2 - 0.5)/(C*omega*R)] Not quite the output you indicated but perhaps close enough?