Expression 7: cosine left parenthesis, "x" , right parenthesiscosx
7
Expression 8: left parenthesis, "v" plus "a" cos left parenthesis, "k" left parenthesis, "x" minus "h" , right parenthesis , right parenthesis , right parenthesis left brace, "h" less than "x" less than StartFraction, 2 times pi Over "k" , EndFraction plus "h" , right bracev+acoskx−hh<x<2·πk+h
8
Expression 9: left parenthesis, "v" plus "a" cos left parenthesis, "k" left parenthesis, "x" minus "h" , right parenthesis , right parenthesis , right parenthesis left brace, "h" less than "x" less than 2 times pi plus "h" , right bracev+acoskx−hh<x<2·π+h
9
Expression 10: left parenthesis, "v" plus "a" cos left parenthesis, "k" left parenthesis, "x" minus "h" , right parenthesis , right parenthesis , right parenthesisv+acoskx−h