Re: Simple Plot3D/Function Syntax issue

*To*: mathgroup at smc.vnet.net*Subject*: [mg68602] Re: Simple Plot3D/Function Syntax issue*From*: Bill Rowe <readnewsciv at earthlink.net>*Date*: Fri, 11 Aug 2006 04:40:28 -0400 (EDT)*Sender*: owner-wri-mathgroup at wolfram.com

On 8/9/06 at 11:57 PM, jtolman at gmail.com (JTolman) wrote: >When I enter f = e^-(x^2 + y^2) (x^2 + 2y^2) It gives me a >syntax::noinfo error but the output looks like the correct textbook >style function. Hmm... When I simply copy, paste then execute the line above in Mathematica 5.2 in a fresh session I don't get an error. Nor would I expect to get an error since the assignment to f is valid Mathematica code. >Also, when I try to plot it Plot3D[e^-(x^2 + y^2) (x^2 + 2y^2), {x, >-3, 3}, {y, -3, 3}] It of course gives me not machines-size real >number errors, which I am assuming have more to do with my original >syntax error. In short, e is not E. Plot3D will continue to give the error until you define the variable e to have a numerical value. I assume you meant to plot Exp[-(x^2 + y^2) (x^2 + 2y^2)]. If so, Plot3D[E^-(x^2 + y^2) (x^2 + 2y^2), {x, -3, 3}, {y, -3, 3}]; will give you the desired result -- To reply via email subtract one hundred and four