• 2022-06-07
    判断下列各函数是否是从[tex=0.929x1.0]56hApSzAggyB8sjmsuaFgA==[/tex]到[tex=0.929x1.0]56hApSzAggyB8sjmsuaFgA==[/tex]的双射函数。[tex=5.0x1.357]LSXB6YcUU3D9jvPcPpWtUw==[/tex]