[Date Index]
[Thread Index]
[Author Index]
Re: Grouping terms under the radical
*To*: mathgroup at smc.vnet.net
*Subject*: [mg120087] Re: Grouping terms under the radical
*From*: Paul von Hippel <paulvonhippel at yahoo.com>
*Date*: Fri, 8 Jul 2011 04:51:23 -0400 (EDT)
Thanks for this solution! But what if the expression Sqrt[2*n] is not something that I've input, but part of an expression in Mathematica's output. The output shows 2 and n under separate radicals. How can I tell the software I prefer to see terms combined under a common radical?
--- On Thu, 7/7/11, Bob Hanlon <hanlonr at cox.net> wrote:
From: Bob Hanlon <hanlonr at cox.net>
Subject: [mg120087] Re: Grouping terms under the radical
To: "paulvonhippel at yahoo" <paulvonhippel at yahoo.com>, mathgroup at smc.vnet.net
Date: Thursday, July 7, 2011, 7:25 AM
expr = Sqrt[2*n]
Sqrt[2]*Sqrt[n]
expr /. Sqrt[x_] Sqrt[y_] -> HoldForm[Sqrt[x*y]]
HoldForm[Sqrt[2*n]]
% // ReleaseHold
Sqrt[2]*Sqrt[n]
Bob Hanlon
---- paulvonhippel at yahoo <paulvonhippel at yahoo.com> wrote:
=============
This must be a classic question. When I input
Sqrt[(2 n)]
Mathematica displays the output as Sqrt[2] Sqrt[n] -- i.e., both 2 and
n are under their own radical. The display of output doesn't change if
I impose the assumption that n > 0.
This is fine from a mathematical point of view, but it looks
unconventional when pasted into a paper. It seems to me most authors
would keep the 2 and the n under a common radical -- how can I get
Mathematica to do the same?
Thanks!
Prev by Date:
**Re: Unwanted Recursion**
Next by Date:
**Re: Stacked fractions**
Previous by thread:
**Re: Grouping terms under the radical**
Next by thread:
**Re: Grouping terms under the radical**
| |