Expression 3: left brace, "x" less than or equal to "s" : sin left parenthesis, "x" plus pi , right parenthesis , "s" less than or equal to "x" : cos left parenthesis, "s" plus pi , right parenthesis "x" plus sin left parenthesis, "s" plus pi , right parenthesis minus cos left parenthesis, "s" plus pi , right parenthesis "s" , right bracex≤s:sinx+π,s≤x:coss+πx+sins+π−coss+πs
3
Expression 4: left brace, "x" less than or equal to "s" : sin left parenthesis, "x" plus StartFraction, 3 pi Over 2 , EndFraction , right parenthesis , "s" less than or equal to "x" : cos left parenthesis, "s" plus StartFraction, 3 pi Over 2 , EndFraction , right parenthesis "x" plus sin left parenthesis, "s" plus StartFraction, 3 pi Over 2 , EndFraction , right parenthesis minus cos left parenthesis, "s" plus StartFraction, 3 pi Over 2 , EndFraction , right parenthesis "s" , right bracex≤s:sinx+3π2,s≤x:coss+3π2x+sins+3π2−coss+3π2s