• 2022-06-16
    记行列式[tex=14.071x4.929]Uyz5s0rmQIddjb5Jc2T/YZhK7kg+Ear9bZUPUbHi14Ht29sEwk99f5iQ/QbShNecY5I9qi9wi+0MnumbnJfUzFCfdcjPKSjuHHlDd4ZMUu/GC6PoNEP7ud8rZ8cNOSY6el0jRojVIzvrkc4H1FLepI6VyR3t4v2Jeuv1QA6T5f8t+GPkF9DsDhk7FhCQiIAiunVXDDgeok7OQlklGtsoP2CJp7dKlHZzgjs9aD/Zuv0=[/tex]为[tex=1.857x1.357]BGkv0wKMIn2R4tUsMDFEFA==[/tex],则方程[tex=3.714x1.357]65B6ryUjJi4PhOvbjiu/QQ==[/tex] 的根的个数为(    )(A)1;    (B)2;    (C)3;    (D)4.
  • 举一反三