考虑二元函数的下面四条性质,则有( )(1)f(x,y)在点[img=52x25]1803d33f049b721.png[/img]处连续 (2)f(x,y)在点[img=52x25]1803d33f049b721.png[/img]处两个偏导数连续(3)f(x,y)在点[img=52x25]1803d33f049b721.png[/img]处可微 (4)f(x,y)在点[img=52x25]1803d33f049b721.png[/img]处两个偏导数存在
A: [img=125x25]1803d33f258c65d.png[/img]
B: [img=125x25]1803d33f2f5d801.png[/img]
C: [img=125x25]1803d33f3820bdb.png[/img]
D: [img=125x25]1803d33f40873ef.png[/img]
A: [img=125x25]1803d33f258c65d.png[/img]
B: [img=125x25]1803d33f2f5d801.png[/img]
C: [img=125x25]1803d33f3820bdb.png[/img]
D: [img=125x25]1803d33f40873ef.png[/img]
举一反三
- 考虑二元函数的下面四条性质,则有( )(1)f(x,y)在点[img=52x25]1803d3469e57b15.png[/img]处连续 (2)f(x,y)在点[img=52x25]1803d3469e57b15.png[/img]处两个偏导数连续(3)f(x,y)在点[img=52x25]1803d3469e57b15.png[/img]处可微 (4)f(x,y)在点[img=52x25]1803d3469e57b15.png[/img]处两个偏导数存在 A: [img=125x25]1803d346c03fe8a.png[/img] B: [img=125x25]1803d346c8da475.png[/img] C: [img=125x25]1803d346d101a9e.png[/img] D: [img=125x25]1803d346d9681c2.png[/img]
- 下列结论正确的是( ) 未知类型:{'options': ['如果函数f(x)在点x=[img=24x21]17d622a10bb6102.png[/img]处不可导,则f(x)在点x=[img=24x21]17d622a11777a31.png[/img]处也可能连续', '如果函数f(x)在点x=[img=24x21]17d622a121a6732.png[/img]处可导,则f(x)在点x=[img=24x21]17d622a12c812cc.png[/img]处连续', '如果函数f(x)在点x=[img=24x21]17d622a13b63a95.png[/img]处连续,则f(x)在点x=[img=24x21]17d622a148cc6ab.png[/img]处可导', '如果函数f(x)在点x=[img=24x21]17d622a15bfb483.png[/img]处不连续,则f(x)在点x=[img=24x21]17d622a166c77a6.png[/img]处不可导'], 'type': 102}
- 若[img=131x36]17e441a2dc6ffa4.jpg[/img],A为常数,则有()。 未知类型:{'options': ['f(x)在点x=a处连续', ' f(x)在点x=a处可导', ' [img=52x25]17e441a2e60734b.jpg[/img]存在', ' 以上都对'], 'type': 102}
- 若[img=131x36]17e0bccc6c4f949.jpg[/img],A为常数,则有()。 未知类型:{'options': ['f(x)在点x=a处连续', ' f(x)在点x=a处可导', ' [img=52x25]17e0bccc77e5e72.jpg[/img]存在', ' 以上都对'], 'type': 102}
- 考虑二元函数f(x,y)的下面四个性质: (1)f(x,y)在点f(x,y)处连续; (2)f(x,y)在点f(x,y)处的两个偏导数连续; (3)f(x,y)在点f(x,y)处可微; (4)f(x,y)在点f(x,y)处的两个偏导数存在; 若用P=>Q表示可由性质P推出性质Q,则有.