solving eqn with symbolic variable

[Mukesh]

hi,
can i solve a nonlinear eqn with 3-4 variables  for  one variable in 
terms of other variable..

ex:
g = x^3+x*y+x*z+y*z+3;
i want to find out "y" in terms of all other variables "x,z"..

i m not able to use symfsolve as i m getting following error

octave:91> a = symfsolve(g,x);
error: The number of initial conditions does not match the number of 
free variables.

and symlsolve is for linear equations..

in matlab solve commant is able to do that..

i hope i made the problem clear..
all suggestions are welcome..

--
Thanx and Regards,

Mukesh Khatri
Design Engineer - Analog        Mobile  +91 - 9448.011.061      
Cosmic Circuits Pvt. Ltd.       Email   address@hidden
                                        address@hidden

"There is only one success - to be able to spend your life in your own way." 




-------------------------------------------------------------
Octave is freely available under the terms of the GNU GPL.

Octave's home on the web:  http://www.octave.org
How to fund new projects:  http://www.octave.org/funding.html
Subscription information:  http://www.octave.org/archive.html
-------------------------------------------------------------