已知柱面的准线为:[tex=14.0x3.357]fnpmC2J6JmQBLyo5NmGAz56cgF+MRi8/pFjSehCSEI3VcKvKFI2ych58/T3psKqYFw5Rr5Ql372v3B1N6eXaePzOBY0oFkJNLsqVqsZhzvj9grVXZGgcKfa+jeS6EiLu[/tex],且(1)母线平行于[tex=0.571x0.786]c5VsltFnl9nO0qB/vNKOWA==[/tex]轴;(2)母线平行于直线[tex=4.0x1.0]jnFEkxpfY1T6qyzQowf+yg==[/tex],试求这些柱面的方程.
举一反三
- 已知柱面的准线为且(1)母线平行于x轴;(2)母线平行于直线x=y,z=c,试求这些柱面的方程.已知柱面的准线为{x+y+z=0,x^2+y^2+z^2=1},且(1)母线平行于x轴;(2)母线平行于直线x=y,z=c,试求这些柱面的方程.
- 求柱面方程:准线为[tex=4.786x3.357]7EJHVCtO2IWq3KpdB+jQsvMilYoyf6TFxlIO8MoH9z72KBfHNOUea2ZuFceOOsLi/Hf6fNwGQ4ePWund8+1o2Q==[/tex]母线平行于[tex=0.571x0.786]ZKO2xs0EgSemzoH7MSmYTA==[/tex]轴.
- set1 = {x for x in range(10)} print(set1) 以上代码的运行结果为? A: {0, 1, 2, 3, 4, 5, 6, 7, 8, 9} B: {0, 1, 2, 3, 4, 5, 6, 7, 8, 9,10} C: {1, 2, 3, 4, 5, 6, 7, 8, 9} D: {1, 2, 3, 4, 5, 6, 7, 8, 9,10}
- >>>x= [10, 6, 0, 1, 7, 4, 3, 2, 8, 5, 9]>>>print(x.sort()) 语句运行结果正确的是( )。 A: [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10] B: [10, 6, 0, 1, 7, 4, 3, 2, 8, 5, 9] C: [10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0] D: ['2', '4', '0', '6', '10', '7', '8', '3', '9', '1', '5']
- 求柱面方程:准线为:[tex=4.429x2.786]fnpmC2J6JmQBLyo5NmGAzwzBMK/WUHTHr/lTBlf+JkPzOjr5/raEwKZrJtHe+A3XGNn7AyJuuqagEboFuvzmfA==[/tex],母线平行于[tex=0.857x1.0]Qp/gQKinG9+dWvJ2JrEi+g==[/tex]轴。