表达式25: "y" equals 1.1 5sine left parenthesis, StartFraction, pi Over 6 , EndFraction "t" plus 89.5 , right parenthesis plus 6.1 8y=1.15sinπ6t+89.5+6.18
25
表达式26: "y" equals 1.3 4sine left parenthesis, StartFraction, pi Over 6 , EndFraction "t" minus 14.1 , right parenthesis plus 18.2 1y=1.34sinπ6t−14.1+18.21