表达式4: "y" equals negative 2 "x" squared minus 2 "x" minus 8 left brace, "x" greater than or equal to 0 , right bracey=−2x2−2x−8x≥0
4
表达式5: "y" equals negative 2 "x" squared minus 2 "x" minus 8 left brace, "x" less than 0 , right bracey=−2x2−2x−8x<0
5
表达式6: left parenthesis, "t" squared minus 4 , negative 2 "t" to the 4th power minus 2 "t" cubed minus 8 "t" squared , right parenthesist2−4,−2t4−2t3−8t2
6
表达式7: "y" equals "x" squared plus "x" Superscript, 1.5 , Baseline plus 4 "x"y=x2+x1.5+4x
7
表达式8: "y" equals "x" squared minus "x" Superscript, 1.5 , Baseline plus 4 "x"y=x2−x1.5+4x
