表达式5: "s" Subscript, 2 , Baseline left parenthesis, "a" , "n" , right parenthesis equals exponent left parenthesis, negative StartFraction, "a" Over 1 times 2 pi , EndFraction , right parenthesis left brace, "a" less than "n" times 2 pi , right braces2a,n=exp−a1·2πa<n·2π
5
表达式6: left parenthesis, 1 plus "s" Subscript, 2 , Baseline left parenthesis, "t" , 3 , right parenthesis times cos left parenthesis, "t" , right parenthesis , "s" Subscript, 2 , Baseline left parenthesis, "t" , 3 , right parenthesis times sin left parenthesis, "t" , right parenthesis , right parenthesis1+s2t,3·cost,s2t,3·sint
定义域t最小值： 00
less than or equal to "t" less than or equal to≤t≤
定义域t最大值： 10001000
6
Constant wheel turn:
7
表达式8: "a" Subscript, 3 , Baseline left parenthesis, "t" , right parenthesis equals 2 times "t" squareda3t=2·t2
