• 2022-07-24
    证明:[tex=4.143x2.5]2KZjIu/SEdBkfzff7V2KqIZmVZfHf+i9xn6Xv6gLl2M=[/tex]将[tex=3.929x1.357]Hxr+WAd0pdX8wRxoSXYGR+WSldqPleujX0nHQcn47nw=[/tex]映为[tex=4.143x1.357]Hxr+WAd0pdX8wRxoSXYGRwI2yMIrjdBp0f5EeLGOXKE=[/tex]的充要条件是[tex=2.786x1.214]Alvty5eRAguf/BAip0SU2g==[/tex]为实数.