Expression 7: median left parenthesis, cos left parenthesis, left bracket, 0 , "x" , "y" , "x" plus "y" , "x" minus "y" , right bracket , right parenthesis , right parenthesis max left parenthesis, cos left parenthesis, "x" plus "y" , right parenthesis , cos left parenthesis, "x" minus "y" , right parenthesis , sin left parenthesis, "x" , right parenthesis tan left parenthesis, "y" , right parenthesis , right parenthesis less than 0mediancos0,x,y,x+y,x−ymaxcosx+y,cosx−y,sinxtany<0
7
Expression 8: max left parenthesis, cos left parenthesis, "x" minus left bracket, negative 1 , 1 , 2 , right bracket "y" , right parenthesis minus left bracket, 0 , 0 , cos left parenthesis, "x" plus 2 "y" , right parenthesis , right bracket , right parenthesis less than 0maxcosx−−1,1,2y−0,0,cosx+2y<0
8
Expression 9: max left parenthesis, cos left parenthesis, "x" plus "y" , right parenthesis , cos left parenthesis, "x" minus "y" , right parenthesis , sin left parenthesis, "x" , right parenthesis tan left parenthesis, "y" , right parenthesis , right parenthesis less than 0maxcosx+y,cosx−y,sinxtany<0
9
Expression 10: max left parenthesis, cos left parenthesis, left parenthesis, "x" plus "y" , right parenthesis , right parenthesis , cos left parenthesis, left parenthesis, "x" minus "y" , right parenthesis , right parenthesis , cos left parenthesis, "x" minus 2 "y" , right parenthesis minus cos left parenthesis, "x" plus 2 "y" , right parenthesis , right parenthesis less than 0maxcosx+y,cosx−y,cosx−2y−cosx+2y<0
10
Expression 11: sine left parenthesis, "x" , right parenthesis sine left parenthesis, 2 "y" , right parenthesis less than 0sinxsin2y<0
11
Expression 12: cosine left parenthesis, "x" minus 2 "y" , right parenthesis minus cosine left parenthesis, "x" plus 2 "y" , right parenthesis less than 0cosx−2y−cosx+2y<0
12
Expression 13: median left parenthesis, cos left parenthesis, left bracket, 0 , "x" , "y" , "x" plus "y" , "x" minus "y" , right bracket , right parenthesis , right parenthesis less than 0mediancos0,x,y,x+y,x−y<0