Expression 6: pi sine left parenthesis, arccos left parenthesis, StartFraction, 2 Over pi , EndFraction "x" minus 10 , right parenthesis , right parenthesis plus 2 piπsinarccos2πx−10+2π
6
Expression 7: arc cosine left parenthesis, StartFraction, 2 Over pi , EndFraction left parenthesis, "x" minus 5 pi , right parenthesis , right parenthesis plus piarccos2πx−5π+π
7
Expression 8: negative pi cosine left parenthesis, arcsin left parenthesis, StartFraction, 2 Over pi , EndFraction "x" minus 12 , right parenthesis , right parenthesis plus pi left brace, 6 pi greater than or equal to "x" , right brace−πcosarcsin2πx−12+π6π≥x
8
Expression 9: "y" equals pi sine left parenthesis, "x" minus StartFraction, pi Over 2 , EndFraction , right parenthesis plus pi left brace, 6 pi less than or equal to "x" less than or equal to 8 pi , right bracey=πsinx−π2+π6π≤x≤8π
9
Expression 10: "y" equals 0 left brace, 8 pi less than or equal to "x" less than or equal to 9 pi , right bracey=08π≤x≤9π