判断下面二次曲线的几何图形.[p=align:center][tex=5.857x1.429]qTv9cWbJKxr24mGbVaBfRESFqXtSzy+qfgMjWMqyQUM=[/tex]
举一反三
- 求下列二次曲线的渐近方向，并指出曲线是属于何种类型的.[p=align:center][tex=12.214x1.429]VKWNVkLDDn5EipxjWmnkXEVHSuL8ny2PODijo3g2R5G550J8/G9dmHupsxfGh9Sh[/tex].
- 求下列曲线的中心：[p=align:center][tex=8.286x1.214]jBnGA6WjXFxD1+/Ly9TyNzR6LAfJlRr9lNmH4M6jSnI=[/tex].
- 讨论下列参数方程表示什么图形：[p=align:center][tex=15.0x4.071]7EJHVCtO2IWq3KpdB+jQstvZl1ATvXVvVK8qpTfq6pz9FL0+j7JiAD+D32mF7RN16zpiDIOJnKyohjbe+VIKCRUGk22eBYcHQGsspkXEulex1LJN2poBecKJV+fNU0cVEXnIpXPNv7HMCzuZbGDtHxdTGLx1Lg771ihQljmlB2I=[/tex].
- 计算下面行列式.[p=align:center][tex=13.0x6.5]xbOkdWXE1V4xsD8dsMow0p1ja5tAa6vfjcYCD8paTaeJeyG7d+aFQWUndI1J1gsL+i6Xwmwq4Adnv5haLHBYIRsHqismG5YZmTjHlkJlBphWFsRVDj7Slw9rGCj6jdvkEDUVjmLqTrI/F9YhYhxt29tBnuFNii661m4dJiPaME64Lt7CHZiPvO9IcPwDjk+Gr+lldLXl7TaT0Xrt7qREADmGtdNusNkPdLoDSN4jqLuG/Vilr+nSFlLMDRIObaC0c7tJftmRUbP0Ls7keGLylzwqGMiiuGV5Cj2X4DInJbR73S0DqO/EfVDEuNkFZltqBc5Y9LBvjxYrcGnonnPdl4KyQwPdKvLRaWCKBqLxSUw=[/tex]
- 已知[tex=5.0x1.357]m3IZU8rCv0YYRA4o56qq3NxgfDNr71NYeWTA3x7afqk=[/tex]为整数[tex=2.786x1.357]6unKUwy5rVEcywe1qlSpwg==[/tex]，讨论该代数系统是否为环，是否为整环.其中[p=align:center][tex=10.5x1.357]qZyD25HFTJzQq8Xw6TUTvoTsVboBkKr/JtXGBvmBiK1tSrig+8hvu7T9v2yxFC5Q[/tex][p=align:center][tex=10.143x1.357]f7esO9UEnWUwP4HpW1IGovNbeCO0niXd3FsMPc2oTKY=[/tex][p=align:center][tex=8.286x1.357]K76amrYC/83ACLpG681AePfTbPJQOE82+sPFtO9jo8o=[/tex]