3d plot's of function's domain

*To*: mathgroup at smc.vnet.net*Subject*: [mg63109] 3d plot's of function's domain*From*: "A D'Ignazio" <est1900 at hotmail.com>*Date*: Thu, 15 Dec 2005 03:06:21 -0500 (EST)*Sender*: owner-wri-mathgroup at wolfram.com

Dear MathGroup, I would be very grateful if you could help me on this: I got a function of three variables f(x,y,z). I want to get a 3d plot of the region A in R^3 such that for any vector of values (x,y,z) in A the function f is positive. I'm only able to solve this problem in a basic way: I fix one of the three variables -let's say z=Z -and then I get the 3d plot of the function f(x,y| z=Z), get the contour plot and define the region of interest. I can do it for several values of Z, but i think it is not very elegant. There is a way to obtain directly the 3d plot of the variables space such that the condition of f(.) being positive is satisfied? Many thanks A D _________________________________________________________________ Scarica gratuitamente MSN Toolbar! http://toolbar.msn.it/

**Follow-Ups**:**Re: 3d plot's of function's domain***From:*"Carl K. Woll" <carlw@wolfram.com>