radical(n,body) On 2/12/07, Alec Mihailovs <[EMAIL PROTECTED]> wrote: > > ----- Original Message ----- > From: "Dirk Laurie" <[EMAIL PROTECTED]> > >> {{{ > >> sage: exp(log(64)/3) > >> 4.0 > >> }}} > > Well, that works for the cube root of 64. But note it's 4.0, not 4. > > This exposes one to roundoff errors, which the other two methods > > avoid. > > Well, that can be avoided by increasing the number of digits. Anyway, the > winner is 64.nth_root(3) suggested by Didier Deshommes in another thread. > > I'd like to make a suggestion to add th_root method to all domains where > nth_root is implemented, working as 3.th_root(64) in this example, with > aliases st_root, nd_root and rd_root, so that it could be executed as > 3.rd_root(64) that looks more natural to me than 64.nth_root(3). > > Alec > > > > > >
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