Re: How to ±
- To: mathgroup at smc.vnet.net
- Subject: [mg103682] Re: How to ±
- From: ADL <alberto.dilullo at tiscali.it>
- Date: Fri, 2 Oct 2009 08:24:08 -0400 (EDT)
- References: <ha243r$p76$1@smc.vnet.net>
PlusMinus[a_, b_] := {a + b, a - b}
x <ESC>+-<ESC> 1 ==> {x+1, x-1}
ADL
On Oct 1, 1:34 pm, Bob Hanlon <hanl... at cox.net> wrote:
> x + {1, -1}
>
> {x+1,x-1}
>
> Bob Hanlon
>
> ---- olliH <oliver.hofh... at googlemail.com> wrote:
>
> =============
> Hi how do I make an expression with the =B1 Operator?
>
> In = x =B1 1
> Out = {x+1,x-1}