수식 3: cosine left parenthesis, "x" plus "t" , right parenthesis left brace, "x" less than 2 pi , right bracecosx+tx<2π
3
수식 4: "y" less than or equal to cosine left parenthesis, "x" minus "t" , right parenthesis plus cosine left parenthesis, "x" plus "t" , right parenthesis left brace, "x" less than 2 pi , right bracey≤cosx−t+cosx+tx<2π
4
수식 5: "t" equals 3.1 9 6t=3.196
00
2 pi2π
5
수식 6: "x" greater than or equal to 2 pi left brace, "y" less than or equal to 3 , right bracex≥2πy≤3
