left parenthesis, 1.2 6 5 , 0.4 , right parenthesis1.265,0.4
9
Expression 10: "d" Subscript, "o" "t" , Baseline left parenthesis, "u" , "v" , right parenthesis equals "u" . "x" times "v" . "x" plus "u" . "y" times "v" . "y"dotu,v=u.x·v.x+u.y·v.y
10
Expression 11: "d" Subscript, "o" "t" , Baseline left parenthesis, "Z" Subscript, 0 , Baseline , left parenthesis, "x" , "y" , right parenthesis , right parenthesis equals "d" Subscript, "o" "t" , Baseline left parenthesis, "Z" Subscript, 0 , Baseline , left bracket, "Z" , 1 half left parenthesis, "Z" plus "Z" Subscript, "l" , Baseline , right parenthesis , "Z" Subscript, "l" , Baseline , right bracket , right parenthesisdotZ0,x,y=dotZ0,Z,12Z+Zl,Zl