Error: Ij=x=y()`i(x)=`i(y)ij=x6=y()`i(x)6=`i(y)ij=1^2()ij=1andij=2ij=x7!y()9v;w2vib;r:vir=fvg;eip=f(v;w)g;`i(x)=v;`i(y)=wij=ls(x;y)()9n2n:ij=lsn(x;y)ij=ls0(x;y)()`i(x)=`i(y)andvir=;ij=lsn 1(x;y)()9z=2dom - PowerPoint Presentations and PDF Documents