表达式5: "r" equals left parenthesis, ( "n" plus "n" plus "n" ) "n" plus "n" , right parenthesis minus left parenthesis, left parenthesis, "n" / ( "n" plus "n" ) , right parenthesis , right parenthesisr=(n+n+n)n+n−n/(n+n)
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：
equals=
289.5289.5
5
表达式6: "r" equals StartFraction, left parenthesis, ( "n" plus "n" plus "n" ) "n" minus "n" , right parenthesis Over left parenthesis, left parenthesis, "n" / ( "n" plus "n" ) , right parenthesis , right parenthesis , EndFractionr=(n+n+n)n−nn/(n+n)
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：
equals=
620620
6
表达式7: "r" equals left parenthesis, ( "n" plus "n" plus "n" ) "n" minus "n" , right parenthesis times left parenthesis, left parenthesis, "n" / ( "n" plus "n" ) , right parenthesis , right parenthesisr=(n+n+n)n−n·n/(n+n)
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：
equals=
155155
7
表达式8: "r" equals left parenthesis, ( "n" plus "n" plus "n" ) "n" minus "n" , right parenthesis plus left parenthesis, left parenthesis, "n" / ( "n" plus "n" ) , right parenthesis , right parenthesisr=(n+n+n)n−n+n/(n+n)
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：
equals=
310.5310.5
8
表达式9: "r" equals left parenthesis, ( "n" plus "n" plus "n" ) "n" minus "n" , right parenthesis minus left parenthesis, left parenthesis, "n" / ( "n" plus "n" ) , right parenthesis , right parenthesisr=(n+n+n)n−n−n/(n+n)
00
定义域\theta最小值：
less than or equal to theta less than or equal to≤θ≤
