Re: Solving equation and applying solution(s) expression.
- To: mathgroup at smc.vnet.net
- Subject: [mg84562] Re: Solving equation and applying solution(s) expression.
- From: Peter Breitfeld <phbrf at t-online.de>
- Date: Thu, 3 Jan 2008 20:32:57 -0500 (EST)
- References: <flidj5$fcc$1@smc.vnet.net>
KP schrieb: > Hi Everybody. I am a new subscriber to this group and looking forward > to learning from folks who use Mathematica. I have a question and some > help will be appreciated..... > > I want to solve an equation and then apply the solution(s) of the > equation to an expression. For example, I want to solve 3 x^2 - 2 x + > 8 =0. Then I want to apply the solutions to the expression 3 x / (x^3 > +2). > > The equation and the expression above are examples I used to > illustrate my question. Please use the equation and the expression to > help me out. Thank you and happy new year! > > --KP > Do the following: lsg = Solve[3 x^2 - 2 x + 8 == 0, x] (3 x/(x^3 + 2) /. lsg) // Simplify Gruss Peter -- ==-==-==-==-==-==-==-==-==-==-==-==-==-==-==-==-==-==-==-==-==-== Peter Breitfeld, Bad Saulgau, Germany -- http://www.pBreitfeld.de