Expression 5: "x" squared plus "y" squared less than or equal to 2sine 2 "p" plus 5x2+y2≤2sin2p+5
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Expression 6: "p" equals 1.9 1p=1.91
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Expression 7: "a" equals left bracket, StartFraction, pi Over 8 , EndFraction , StartFraction, pi Over 4 , EndFraction , ... , 2 pi , right bracketa=π8,π4,...,2π