Page 1 Page 2 Page 3 Page 4 Page 5 Page 6 Page 7 Page 8 Page 9 Page 10 -3 -2 -1 1 2 3 -2 -1 1 2 x y r( = 1 + 2cos()a/b = 1/2 Page 11 -2 -1 1 2 -1 1 x y r() = 1 + cos() a/b = 1 Page 12 -2 -1 1 2 -1 1 x y r() = 1 + (3/4)cos()a/b = 4/3 Page 13 -2 -1 1 2 -1 1 x y r() = 1 + (1/2)cos()a/b = 2 Page 14 Page 15