表达式5: "x" squared plus "y" squared less than or equal to 2sine 2 "p" plus 5x2+y2≤2sin2p+5
5
表达式6: "p" equals 2.5 6 4p=2.564
00
2 pi2π
6
表达式7: "a" equals left bracket, StartFraction, pi Over 8 , EndFraction , StartFraction, pi Over 4 , EndFraction , ... , 2 pi , right bracketa=π8,π4,...,2π