`1` left parenthesis, 1 , 0 , right parenthesis1,0
Label:
5
Expression 6: "y" equals negative 2.5 left brace, 3 less than or equal to "x" less than or equal to 7 , right bracey=−2.53≤x≤7
6
`拖动我,试试!` left parenthesis, "a" plus 6 , negative 2.5 , right parenthesisa+6,−2.5
Label:
equals=
left parenthesis, 5.9 3 , negative 2.5 , right parenthesis5.93,−2.5
7
Expression 8: "x" equals natural log left parenthesis, negative 2 "a" , right parenthesis left brace, negative 4 less than "y" less than 4 , right bracex=ln−2a−4<y<4
8
Expression 9: "x" equals 1 left brace, negative 4 less than "y" less than 4 , right bracex=1−4<y<4