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Re: function IF with several equality conditions


Hi,

this is because you have not found the 
Mathematica Book AND the online help 
or you may not be able to read the 
Mathematica Book OR the online help 

You many mean

 a=1;
 Table[If[x1>a && x2<a,0,1],{x1,0,2},{x2,0,2}]

or

a=1;
 Table[If[x1>a || x2<a,0,1],{x1,0,2},{x2,0,2}]

and Equal[] is "==" and not Set[] "="

a=1;
 Table[If[x==a,0,1],{x,0,2}]

Regards
  Jens

Mukhtar Bekkali wrote:
> 
> I have two questions that HELP file of Mathematica does not address:
> 
> (1) How do I implement IF with several conditions.  I tried something like this
> 
> a=1;
> Table[If[{x1>a,x2<a},0,1],{x1,0,2},{x2,0,2}]
> 
> and get no results.
> 
> Also, (2) IF does not accept equality conditions either, say
> 
> a=1;
> Table[If[x=a,0,1],{x,0,2}]
> 
> I am surprised that such simple things are not covered by help file.
> 
> Thank you in advance, Mukhtar


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