viewdep transparency: shape transp=ellipse, hull transp=tilted ellipse, correction from 2 to 1
表达式3: "r" equals "A" left parenthesis, theta , 0 , right parenthesisr=Aθ,0
00
定义域\theta最小值：
less than or equal to theta less than or equal to≤θ≤
2 pi2π
定义域\theta最大值：
3
表达式4: "r" equals StartFraction, "A" left parenthesis, theta , StartNestedFraction, pi NestedOver 6 , EndNestedFraction , right parenthesis Over "A" left parenthesis, 0 , StartNestedFraction, pi NestedOver 6 , EndNestedFraction , right parenthesis , EndFractionr=Aθ,π6A0,π6
00
定义域\theta最小值：
less than or equal to theta less than or equal to≤θ≤
2 pi2π
定义域\theta最大值：
4
表达式5: "r" equals StartFraction, "A" left parenthesis, theta , 0 , right parenthesis Over "A" left parenthesis, theta , StartNestedFraction, pi NestedOver 6 , EndNestedFraction , right parenthesis , EndFractionr=Aθ,0Aθ,π6
00
定义域\theta最小值：
less than or equal to theta less than or equal to≤θ≤
