表达式4: "y" Subscript, 2 , Baseline equals "A" sine left parenthesis, "w" Subscript, 2 , Baseline "t" , right parenthesis 有图表。 要进行音频跟踪，按“Alt 键 + T”。y2=Asinw2t
4
表达式5: "w" Subscript, 2 , Baseline equals 10w2=10
negative 10−10
1010
5
表达式6: StartAbsoluteValue, "v" Subscript, 1 , Baseline minus "v" Subscript, 2 , Baseline , EndAbsoluteValue less than less than "v" Subscript, 1 , Baseline "s" "a" "u" "v" Subscript, 2 , Baseline “<”符号的前后不能为空白。v1−v2<<v1sauv2
6
表达式7: "y" equals 2 "A" cosine left parenthesis, StartFraction, left parenthesis, "w" Subscript, 1 , Baseline minus "w" Subscript, 2 , Baseline , right parenthesis Over 2 , EndFraction "t" , right parenthesis sine left parenthesis, StartFraction, left parenthesis, "w" Subscript, 1 , Baseline plus "w" Subscript, 2 , Baseline , right parenthesis Over 2 , EndFraction "t" , right parenthesis 有图表。 要进行音频跟踪，按“Alt 键 + T”。y=2Acosw1−w22tsinw1+w22t
