式13: "y" equals 4 left parenthesis, "x" plus 4.4 7 , right parenthesis squared minus 15 left brace, negative 15 less than "y" less than negative 6.7 1 1 , right bracey=4x+4.472−15−15<y<−6.711
13
式14: "y" equals 4 left parenthesis, "x" minus 4.4 7 , right parenthesis squared minus 15 left brace, negative 15 less than "y" less than negative 6.7 1 1 , right bracey=4x−4.472−15−15<y<−6.711
14
式15: "y" equals negative 6.7 1 1 left brace, negative 5.9 less than "x" less than negative 3.0 3 , right bracey=−6.711−5.9<x<−3.03
15
式16: "y" equals negative 6.7 1 1 left brace, 3.0 3 less than "x" less than 5.9 , right bracey=−6.7113.03<x<5.9
16
式17: "x" equals negative 1 left brace, negative 20 less than "y" less than negative 14.3 5 9 , right bracex=−1−20<y<−14.359
17
式18: "x" equals 1 left brace, negative 20 less than "y" less than negative 14.3 6 6 , right bracex=1−20<y<−14.366
