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ssearch

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(%i1)if(ssearch("%",string(linsolve([x+y=1,x+y=2],[x,y])))) then 1 else 2;
(%o1)                                  2
(%i2) 
Run Example
if(featurep(ssearch("%",string(linsolve([x+y=1,y-x=0],[x,y]))),integer)) then "ok" else "nio";
(%o1)                                 nio
(%i2) 
Run Example
ssearch("%",string(linsolve([x+y=1,x-y=0],[x,y])));
(%o1)                                false
(%i2) 

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