• 2022-06-19
    设 [tex=14.929x4.5]5Cmgwu1OybHBcWwAUtmUQdgTeSTqBtCKnqbhBHzdyU5ZII/vU8PieqG16YbUAI+XPtMcNmWugkrmRJv9zxPlbSYXlRT9y3qEId/G95ZpKOyczPcKNZ/S84fcMuaTAa6maW5kIJOr7SFkjj2Pv1IEc12jpVJFO+2/nmYQ5KXgPIA=[/tex] 证明: (1) [tex=2.643x1.357]g1Wo3ALRzTk0js5m9GO2sA==[/tex] 在点 [tex=2.286x1.357]sVCzP1QNUT517zJi7AAZqw==[/tex] 处不连续; (2) 偏导数存在; (3)不可微分.
  • 举一反三