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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}



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