Re: What to do in v. 6 in place of Miscellaneous`RealOnly
- To: mathgroup at smc.vnet.net
- Subject: [mg76636] Re: [mg76579] What to do in v. 6 in place of Miscellaneous`RealOnly
- From: Bob Hanlon <hanlonr at cox.net>
- Date: Fri, 25 May 2007 06:26:48 -0400 (EDT)
- Reply-to: hanlonr at cox.net
Plot[y /. Solve[y^3 == x, y], {x, -8, 8}]
Plot[Sign[x] Abs[x^(1/3)], {x, -8, 8}]
Bob Hanlon
---- Helen Read <read at math.uvm.edu> wrote:
> Suppose my calculus students want to plot x^(1/3), for say {x,-8,8}. The
> problem, of course, is that Mathematica returns complex roots for x<0.
> In past versions of Mathematica, we could get the desired real roots
> (and plot the function) by loading the package Miscellaneous`RealOnly. I
> guess we can still do it that way (and ignore the "obsolete package"
> message), but is there a suggested way of doing what we need in 6.0?
>
> --
> Helen Read
> University of Vermont
>