表达式13: "r" equals negative 3.4sine 2 theta left brace, 0 less than theta less than StartFraction, pi Over 4 , EndFraction , right bracer=−3.4sin2θ0<θ<π4
13
表达式14: "r" equals negative 3.4sine 2 theta left brace, StartFraction, 7 pi Over 4 , EndFraction less than theta less than 2 pi , right bracer=−3.4sin2θ7π4<θ<2π
14
表达式15: "r" equals negative 2.5co secant theta left brace, StartFraction, pi Over 4 , EndFraction less than theta less than StartFraction, 3 pi Over 4 , EndFraction , right bracer=−2.5cscθπ4<θ<3π4
15
表达式16: "r" equals negative cosine 3 theta minus 5r=−cos3θ−5
16
表达式17: "r" equals cosine 3 theta minus 5r=cos3θ−5
17
表达式18: "r" equals sine 3 theta negative 5r=sin3θ−5
18
表达式19: "r" equals negative sine 3 theta negative 5r=−sin3θ−5
