• 2022-05-30
    证明序偶[tex=3.357x1.214]F19WdQLTaeo/iAms+yBn9w==[/tex]可以用集合定义为[tex=5.071x1.357]6a6z8YTwRPVWJA7kp0hJkHGWX4wfzxQP5A2nK9lT7vU=[/tex](提示:证明[tex=10.571x1.357]6a6z8YTwRPVWJA7kp0hJkO1oaCaKovkywjLdf+ZeKi+8910YoR1XkvjkBzmHxaVk[/tex]当且仅当[tex=4.214x1.214]uZKXtKnjx2OnW5FPlLhAUg==[/tex] )