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Re: How to =B1?

  • To: mathgroup at smc.vnet.net
  • Subject: [mg103684] Re: How to =B1?
  • From: pfalloon <pfalloon at gmail.com>
  • Date: Fri, 2 Oct 2009 08:24:35 -0400 (EDT)
  • References: <ha2113$n6o$1@smc.vnet.net>

On Oct 1, 8:41 pm, 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}
>
> (=B1 is the plus/minus symbol if this does not show up
> properly - moderator)

you can just go ahead and define it:

In[68]:= x_\[PlusMinus]y_ = {x+y,x-y}

Out[68]= {x + y, x - y}

In[69]:= 1\[PlusMinus]3

Out[69]= {4, -2}

Cheers,
Peter.


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