• 2022-06-18
    计算下列矩阵的 [tex=0.571x1.0]rFc/sfAAuCOtzhevhoREeA==[/tex] 次幂, 其中 [tex=0.571x1.0]rFc/sfAAuCOtzhevhoREeA==[/tex] 为正整数:[tex=7.929x4.786]SG13E7iu2HdaLVWfWJMdasNcssnOsnpcSXP9pfv8ZVudX8uBxPyIW+BW1iuKqBWPQy19xF0hvC5K+ZJXm49WVAb1VZdwsjQNiE6Ohf5lij4=[/tex]
  • 解  设 [tex=7.643x3.5]ZfNUE3D2NzW3pWh0m5JlcpTnCKNPPl6RdiktkoDh5+wUVqv0ftNBCyM/qmDENiv+BGBPY8YgrAqMU/etnNFOSfyVNeBamuW2hM8c5HQsmVIFl9iP9UDmkul1mLnstNnN[/tex], 则[tex=4.5x1.214]LRc34yooNhRwPxCjZ6pQPg==[/tex] 注意到 [tex=0.857x1.214]o04wly1mEimOnnWBAHsPOg==[/tex]和 [tex=1.143x1.0]rVrVy5+1UDs7PnroWmj3tA==[/tex] 乘法可交换, 并且 [tex=2.643x1.214]1fp27kczwe66HfcYVtH+Bg==[/tex], 因此我们可用二项式定理来求 [tex=0.786x1.0]b4HkKtHXeHofHX/gJc8Agg==[/tex] 的 [tex=0.571x1.0]rFc/sfAAuCOtzhevhoREeA==[/tex] 次幂:[br][/br][tex=22.286x6.357]neoCvpRJQY9b/tW+kU2JSRMlzfUl2YkBl1wEeh59xT15oa7RWyGbukfPCSIWkLTGRPy/sSAj37VY30ReElnrtsyQkEDtv/rPS12+PSc9CMEcgtsSJXaUwhq+fw2m5ds3wRRcYZxKLHOu15Gt7gV8WreZQOJt7qJw6+XSJP/lWC5mVpdbGHRfq8jd4hrEesq05j6pB/j8V0nmB96TfttqlzTd3TvANA/XqeG/YFKhXF6yMVMCxM8V4OLiTHEg/H7uLi/7HA6x76BHX+F/l+e4GAh9tI0AxmHBtPburIH3Bl0oeT8Zd3UY13ZEo+NgaJdpx90Ep17MXq41bVr0O/LNa7JjC3phy1OIre0NgUSai8o=[/tex]

    内容

    • 0

      从 [tex=2.286x1.0]Tv9J6hl5OfwCno6jJv7xtw==[/tex] 的整数中取一个数,若取到整数 [tex=0.571x1.0]rFc/sfAAuCOtzhevhoREeA==[/tex] 的概率与 [tex=0.571x1.0]rFc/sfAAuCOtzhevhoREeA==[/tex] 成正比,求取到偶数的概率.

    • 1

      设[tex=3.857x1.0]ooePFz0xjtusf6vpqQWa8A==[/tex], 证明[tex=6.071x1.5]jSQkp3AY1dfhljvrYqoI9+20CYhQPrsPY6WJKdiMWVU=[/tex] 其中 [tex=0.571x1.0]rFc/sfAAuCOtzhevhoREeA==[/tex]为非负整数。

    • 2

      [tex=0.571x1.0]FGGpnaR8m8C48rN8O0c7aw==[/tex]是不等于 2 和 5 的质数,[tex=0.571x1.0]rFc/sfAAuCOtzhevhoREeA==[/tex] 是自然数,证明:[tex=5.143x2.643]9ZG142R87UZpWk+DznzbSQal4BSvAr69lHZKETg6dhBcGaNQr9t99v+4iW7u7hVUeO+W/nUuchAm9kbqae1S7A==[/tex]

    • 3

      当 [tex=0.571x1.0]rFc/sfAAuCOtzhevhoREeA==[/tex] 为 (   ) 时, 矩阵 [tex=8.429x3.929]QN0fTQbn6M33pU3gx/S2srrO+uPYR1FjXG+OULT3PZ0SZZv0cSQupnZyQHcg8Bq3hHsRRoJ35sZ/ccGFpHG0e8Wn0r2X4CmeHP5XlhmRWGEElGmh4cHBsTAfC35uP2P5[/tex] 为正定阵. 未知类型:{'options': ['[tex=2.357x1.071]iILyBi8jdCgmaZqoi7cqWw==[/tex]', '[tex=2.786x1.286]Ngz0glv+VFVna1g4OsuYaQ==[/tex]', '[tex=2.357x1.071]upVaYJbqmrJHFYrKAoUxOw==[/tex]', '[tex=0.571x1.0]rFc/sfAAuCOtzhevhoREeA==[/tex] 不存在'], 'type': 102}

    • 4

      当[tex=0.571x1.0]rFc/sfAAuCOtzhevhoREeA==[/tex]为何值时,反常积分[tex=5.857x3.429]PJkWCDHq0HBl1uIZQZIQaCJeYEBINEa3r1jVRLOCV3RAYxRTzznIBmThvoc5BKDWEufXbmYTxx3twNmSd5TmhQ==[/tex]收敛? 当[tex=0.571x1.0]rFc/sfAAuCOtzhevhoREeA==[/tex]为何值时,这反常积分发散?当[tex=0.571x1.0]rFc/sfAAuCOtzhevhoREeA==[/tex]为何值时,这反常积分取得最小值?