[Tugindia] cases with multiple tabs

Ashis Kumar Mal akmal at ece.iitkgp.ernet.in
Thu Aug 21 01:57:24 CEST 2003


Dear All,
I am trying to format a equation like this.
             -
            |  +x  if N/4  < x < 3N/4 
    - f(x) < 
   |        |  -2x if 3N/4 < x < N
   |         -
   |  
z=<        
   |	   
   |         -
   |        |  -2x if N/4  < x < 3N/4 
    - f(y) < 
            |  +x  if 3N/4 < x < N
             -


I tried to use cases environment,  but unable
to produce any output. I am in doubt wheather
cases can be nested. Moreover, in cases I can't 
use more than one tab(&).
I wish to  align "if" s and "<" s .

Could someone please suggest me any link to
start.

Thanks in advance. 

With regards,

Ashis Kumar Mal
Kharagpur




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