Expression 7: left parenthesis, "X" , "Y" , right parenthesisX,Y
7
Expression 8: "t" left parenthesis, "x" , "y" , right parenthesis equals 0.2 5 left parenthesis, "x" plus "y" , right parenthesis plus 0.4tx,y=0.25x+y+0.4
8
Expression 9: "r" left parenthesis, "x" , "y" , right parenthesis equals 0.7 plus 0.5cosine left parenthesis, 2 pi left parenthesis, 0.8 "t" left parenthesis, "x" , "y" , right parenthesis , right parenthesis , right parenthesisrx,y=0.7+0.5cos2π0.8tx,y
9
Expression 10: "g" left parenthesis, "x" , "y" , right parenthesis equals 0.5 plus 0.5cosine left parenthesis, 2 pi left parenthesis, 0.2 plus 0.8 "t" left parenthesis, "x" , "y" , right parenthesis , right parenthesis , right parenthesisgx,y=0.5+0.5cos2π0.2+0.8tx,y
10
Expression 11: "b" left parenthesis, "x" , "y" , right parenthesis equals 0.4 plus 0.6cosine left parenthesis, 2 pi left parenthesis, 0.5 plus 0.5 "t" left parenthesis, "x" , "y" , right parenthesis , right parenthesis , right parenthesisbx,y=0.4+0.6cos2π0.5+0.5tx,y
11
Expression 12: "c" equals rgb left parenthesis, 255 "r" left parenthesis, "X" , "Y" , right parenthesis , 255 "g" left parenthesis, "X" , "Y" , right parenthesis , 255 "b" left parenthesis, "X" , "Y" , right parenthesis , right parenthesisc=rgb255rX,Y,255gX,Y,255bX,Y