表达式7: "a" equals StartFraction, left parenthesis, "y" Subscript, 2 , Baseline minus "y" Subscript, 1 , Baseline , right parenthesis Over left parenthesis, "x" Subscript, 2 , Baseline minus "x" Subscript, 1 , Baseline , right parenthesis , EndFractiona=y2−y1x2−x1
equals=
negative 0.1 6 3 6 0 4 8 5 2 6 8 6−0.163604852686
7
表达式8: "b" equals "y" Subscript, 1 , Baseline negative "a" times "x" Subscript, 1 , Baselineb=y1−a·x1
equals=
3.8 8 4 7 8 3 3 6 2 2 23.88478336222
8
表达式9: "y" equals "a" "x" plus "b"y=ax+b
9
表达式10: "y" equals negative StartFraction, "x" Over "a" , EndFraction plus "b"y=−xa+b
10
表达式11: "r" equals 1 minus sine left parenthesis, theta , right parenthesisr=1−sinθ
00
定义域\theta最小值：
less than or equal to theta less than or equal to≤θ≤
