Expression 1: left parenthesis, join left parenthesis, sin left parenthesis, "x" , right parenthesis sin "y" , .9 plus "z" cos left parenthesis, left bracket, "x" , "x" , "y" , "y" , right bracket plus StartFraction, "z" Over 4 , EndFraction , right parenthesis sin left parenthesis, left bracket, "y" , "y" , "x" , "x" , right bracket , right parenthesis , right parenthesis .minwith "x" equals "x" plus StartFraction, sin StartNestedFraction, "y" NestedOver 2 , EndNestedFraction Over 6 , EndFraction , "y" equals "y" minus StartFraction, sin StartNestedFraction, "x" NestedOver 2 , EndNestedFraction Over 6 , EndFraction , "z" equals left bracket, 1 , negative 1 , negative 1 , 1 , right bracket , right parenthesis less than or equal to 0joinsinxsiny,.9+zcosx,x,y,y+z4siny,y,x,x.minwithx=x+siny26,y=y−sinx26,z=1,−1,−1,1≤0
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