表达式3: "y" Subscript, 3 , Baseline equals left parenthesis, mod left parenthesis, "x" , 2 , right parenthesis minus 1 , right parenthesis cubedy3=modx,2−13
3
表达式4: "y" Subscript, 4 , Baseline equals StartFraction, 1 Over "t" , EndFraction left parenthesis, abs left parenthesis, abs left parenthesis, mod left parenthesis, "y" Subscript, 1 , Baseline minus "t" , 4 "t" , right parenthesis , right parenthesis minus 2 "t" , right parenthesis minus "t" , right parenthesisy4=1tabsabsmody1−t,4t−2t−t
