• 2022-07-22
    求锥面方程:顶点在原点,准线为[tex=5.071x2.929]7EJHVCtO2IWq3KpdB+jQsvMilYoyf6TFxlIO8MoH9z7oEsxATsaPirsOfhC9yTp6n9Lg7MQ6rXfgTuyVfqP1Zg==[/tex].
  • 举一反三