Re: mathematica gives strange result

*To*: mathgroup at smc.vnet.net*Subject*: [mg111266] Re: mathematica gives strange result*From*: "Nasser M. Abbasi" <nma at 12000.org>*Date*: Sun, 25 Jul 2010 07:46:19 -0400 (EDT)*References*: <i2gjom$3m$1@smc.vnet.net>*Reply-to*: nma at 12000.org

On 7/24/2010 10:57 PM, SNC wrote: > Im trying to find a solution to equation DSolve[-y''[x] + > ((Csc[x])^2)*y[x] == y[x]/4, y[x], x] but mathematica gives me some > strange result with expresion (-1+cos^2(x))^(1/4) in it. Why is that > and how should i interpretate this? > You got back y(x), which is the solution to the diff equation? If you have initial conditions, then you can also plot y(x). Mathematica found y(x), which satisfies the ode. I assume that you know that a solution to an ode is a function which if substituted back into the ode itself, it satisfies it. I am not sure I really answered your question or not. May be it helps if you said what you expected to see, and why the answer returned seems to surprise you? --Nasser