Biểu thức 13: left parenthesis, negative StartFraction, 3 pi Over 2 , EndFraction , 1 , right parenthesis−3π2,1
13
Biểu thức 14: left parenthesis, "t" Subscript, 1 , Baseline sin left parenthesis, negative StartFraction, 3 pi Over 2 , EndFraction , right parenthesis , "t" Subscript, 1 , Baseline sin left parenthesis, StartFraction, 2 "t" Over pi , EndFraction , right parenthesis , right parenthesist1sin−3π2,t1sin2tπ
14
Biểu thức 15: left parenthesis, "t" Subscript, 1 , Baseline sin left parenthesis, StartFraction, 3 pi Over 2 , EndFraction , right parenthesis , "t" Subscript, 1 , Baseline sin left parenthesis, negative 2 "t" , right parenthesis , right parenthesist1sin3π2,t1sin−2t
15
Biểu thức 16: left parenthesis, "t" Subscript, 1 , Baseline sin left parenthesis, StartFraction, 3 pi Over 2 , EndFraction , right parenthesis , "t" Subscript, 1 , Baseline sin left parenthesis, negative 2 "t" Subscript, 1 , Baseline , right parenthesis , right parenthesist1sin3π2,t1sin−2t1
16
Biểu thức 17: left parenthesis, "t" Subscript, 1 , Baseline sin left parenthesis, negative StartFraction, 3 pi Over 2 , EndFraction , right parenthesis , "t" Subscript, 1 , Baseline sin left parenthesis, 2 "t" Subscript, 1 , Baseline , right parenthesis , right parenthesist1sin−3π2,t1sin2t1
17
Biểu thức 18: left parenthesis, "t" Subscript, 1 , Baseline sin left parenthesis, negative StartFraction, 3 pi Over 2 , EndFraction , right parenthesis , "t" Subscript, 1 , Baseline sin left parenthesis, negative 2 "t" , right parenthesis , right parenthesist1sin−3π2,t1sin−2t
18
Biểu thức 19: left parenthesis, "t" sin left parenthesis, negative StartFraction, 3 pi Over 2 , EndFraction , right parenthesis , "t" sin left parenthesis, negative 2 "t" , right parenthesis , right parenthesistsin−3π2,tsin−2t
19
Biểu thức 20: left parenthesis, "t" sin left parenthesis, negative StartFraction, 3 pi Over 2 , EndFraction , right parenthesis , "t" sin left parenthesis, 2 "t" , right parenthesis , right parenthesistsin−3π2,tsin2t
