Re: How can I get better solution for this...?

*To*: mathgroup at smc.vnet.net*Subject*: [mg120043] Re: How can I get better solution for this...?*From*: Siddharth Srivastava <siddys at gmail.com>*Date*: Thu, 7 Jul 2011 07:28:24 -0400 (EDT)*References*: <201107060939.FAA29377@smc.vnet.net>

Hi Bobby, Thanks. I actually wanted sx, sy, gx and gy in terms of the P coeff. The solution you gave is just the equation that I wanted to solve! # On Wed, Jul 6, 2011 at 9:18 AM, DrMajorBob <btreat1 at austin.rr.com> wrote: > Solve[{sx^2 (1 + gx gy)^2 + sx^2 gy^2 == p00, > sx sy gx (1 + gx gy) + sx sy gy == p01, sy^2 (1 + gx^2) == p11, > sx sy == d}, {p00, p01, p11, d}] > > {{p00 -> sx^2 + 2 gx gy sx^2 + gy^2 sx^2 + gx^2 gy^2 sx^2, > p01 -> gx sx sy + gy sx sy + gx^2 gy sx sy, p11 -> (1 + gx^2) sy^2, > d -> sx sy}} > > Bobby > > On Wed, 06 Jul 2011 04:39:55 -0500, sid <siddys at gmail.com> wrote: > > Hi all, >> I am trying to solve the following for {sx,sy,gx,gy} >> >> sx^2 (1 + gx gy)^2 + sx^2 gy^2 = P00 ........(1) >> sx sy gx (1 + gx gy) + sx sy gy = P01 .......(2) >> sy^2 ( 1 + gx^2) = P11 ..............................**.(3) >> sx sy = D ..............................**..................(4) >> >> in terms of P00,P01,P11, and D. >> >> When I use Solve[] , I get a huge output containing the P terms up >> till the order of 16 (i.e P00^16 etc..), which >> I know is not correct. I do not think I am specifying the problem >> correctly, and being a non-expert in Mathematica, would appreciate >> some help. Specifically >> 1) should I specify the simultaneous equation using && operator? I >> have tried it, and I get different (but huge) output >> 2) can I break the problem into parts? how? >> Thanks, >> s. >> >> > > -- > DrMajorBob at yahoo.com >

**References**:**How can I get better solution for this...?***From:*sid <siddys@gmail.com>