• 2022-10-29
    设[tex=11.929x1.571]Bk9FYqzfaQn4t+ncq3xspy4fpy8mJOxXrjrs2vJuJRsnZG6bDFKAQy4+f7s9x8+h[/tex],不用求出[tex=1.857x1.357]BGkv0wKMIn2R4tUsMDFEFA==[/tex]的导数,说明方程[tex=3.5x1.429]77kBfjdnkpW2NUZ9x09UfA==[/tex]应有几个实根,并指出它们所在的区间.