式18: "x" squared plus "y" squared less than or equal to "o"x2+y2≤o
18
式19: "o" equals negative 1.8 4o=−1.84
negative 10−10
1010
19
式20: "y" equals 0 left brace, 1 less than "x" less than 7 , right bracey=01<x<7
20
式21: "x" equals 7 left brace, negative 1 less than "y" less than 1 , right bracex=7−1<y<1
21
式22: "y" equals "x" left brace, 0 less than "x" less than 1 , right bracey=x0<x<1
22
式23: "y" equals negative "x" left brace, 0 less than "x" less than 1 , right bracey=−x0<x<1
23
式24: "x" equals 1 left brace, negative 1 less than "y" less than 1 , right bracex=1−1<y<1
24
式25: "x" equals 6.5 left brace, negative 1 less than "y" less than 1 , right bracex=6.5−1<y<1
25
式26: "x" equals 6 left brace, negative 1 less than "y" less than 1 , right bracex=6−1<y<1
26
式27: "x" squared plus "y" squared less than or equal to "d"x2+y2≤d
27
式28: "d" equals 5.8 6d=5.86
negative 10−10
1010
28
式29: "x" squared plus "y" squared less than or equal to "j"x2+y2≤j
29
式30: "j" equals negative 6.7j=−6.7
negative 10−10
1010
30
式31: "x" equals 0.2 left parenthesis, "y" minus 0 , right parenthesis squared plus 10 left brace, negative 5 less than "y" less than 5 , right bracex=0.2y−02+10−5<y<5
31
式32: "x" equals 15 left brace, negative 5 less than "y" less than 5 , right bracex=15−5<y<5